If a hypothesis test is significant at level α = 0.05, then the P-value is less than or equal to 0.05 or P-value ≤ 0.05.
The P-value is a measure of the strength of the evidence against the null hypothesis. It is the probability of obtaining a test statistic at least as extreme as the one observed, assuming that the null hypothesis is true. If the P-value is less than or equal to the significance level α, it means that the observed evidence is unlikely to have occurred by chance under the null hypothesis, and we can reject the null hypothesis in favor of the alternative hypothesis.
For example, if the P-value of a hypothesis test is 0.03, it means that there is a 3% chance of obtaining the observed test statistic (or a more extreme one) if the null hypothesis is true. Since this is less than the significance level of 0.05, we can reject the null hypothesis and conclude that there is evidence to support the alternative hypothesis.
Hence, if a hypothesis test is significant at level α = 0.05, then P-value ≤ 0.05.
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Officer thomas prefers to use a 35mm single-lens camera to document crime scenes. What is one advantage of using a 35mm camera at a crime scene instead of using a digital camera?.
In 35mm single-lens camera the images produce negative that can be used as backups instead of using a digital camera.
what is single lens camera?A single-lens reflex camera (SLR) is a type of camera that typically employs a mirror and prism system (hence the word "reflex" from the reflection of the mirror) and allows the photographer to look through the lens to preview the exact scene that will be photographed.
Most SLR cameras have a mirror that swings out of the way of the light when the shutter button is depressed, allowing light to reach the light receptor and capturing the image.
The roof pentaprism found in the optical path between the reflex mirror and viewfinder of most SLR cameras enables upright and laterally accurate vision.
A camera's manual focus adjustment or an autofocus system's automated focus adjustment are both options.
The images produce negative that can be used as backups in 35mm single-lens camera instead of using a digital camera.
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Jessica is building a fence around her garden. For every 3 feet of fencing, the cost is $27. Complete the table below showing the length of the fence and the cost.
The complete table is
Length of fencing(feet) 1 3 6 9 10
cost($) 9 27 54 81 90
What is fencing of a wall?
A fence is a building used to enclose a space, usually outdoors. It is often made of posts joined by boards, wire, rails, or nets. In contrast to a wall, a fence lacks a firm basis over its whole length.
The cost of fencing 3 feet is $27.
Applying unitary method:
The cost of fencing 1 feet is $27/3 = $9.
The cost of fencing 6 feet is $(6×9) = $54
The cost of fencing 10 feet is $(10×9) = $90.
$27 needs to make a fencing with length 3 feet.
$1 needs to make a fencing with length 3/27 feet = 1/9
$9 needs to make a fencing with length (1/9)× 9 = 1 feet.
$81 needs to make a fencing with length (1/9)× 81 = 9 feet.
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(Attached imagine) PLEASE HELP!! Simplifying complex numbers
Answer:
6i-4
Step-by-step explanation:
To simplify the expression 4i+(8-3i) - 12+√-25, you can start by combining like terms.
First, you can combine the terms 4i and -3i to get 1i. You can also combine the constants 8 and -12 to get -4.
So, the expression becomes 1i - 4 + √-25.
Next, you can simplify the square root. √-25 is the same as √(-25) which is the same as √(5*-5), which is the same as 5√(-1). √(-1) is equal to i, so 5√(-1) is equal to 5i.
Therefore, the final simplified form of the expression is 1i - 4 + 5i, which is equal to 6i - 4.
in a fruit basket there are 120 fruits some are plums costing 2$ each and others are peaches costing 3$ each total cost of plims was 30$ more than the cost of peaches how many plums and how many peahces are there
Answer:
There are 78 plums and 42 peaches.
Step-by-step explanation:
Let p = number of plums.
Let e = number of peaches.
The value of the plums is 2p.
The value of the peaches is 3e.
"total cost of plims was 30$ more than the cost of peaches"
2p = 3e + 30
"there are 120 fruits some are plums [...] others are peaches"
p + e = 120
We have a system of simultaneous equations.
2p = 3e + 30
p + e = 120
2p = 3e + 30
p = -e + 120
2p = 3e + 30
+ 3p = -3e + 360
------------------------------
5p = 390
p = 78
p + e = 120
78 + e = 120
e = 42
Answer: There are 78 plums and 42 peaches.
Check:
78 plums cost 78 × $2 = $156
42 peaches cost 42 × $3 = 126
$156 - $126 = $30
The plums do cost $30 more than the peaches.
78 + 42 = 120
The total is indeed 120.
The answer above is correct.
A point has a positive x-coordinate and a positive y-coordinate. which quardrant is in it
Answer: 1
Step-by-step explanation: look at the image attached to show which quadrant is what.
when the x coord is +, it's on the right half of the graph, so by this, quadrants 1 and 4 are possible answers.
when the y coord is +, it's on the top half of the graph, this makes quadrants 1 and 2 possible answers.
look for the consistency, in this case since 1 is the only possible answer between both, the answer is 1
What is the slope of the lines that passes through (0,0) and (7,6)
Answer:
Slope is (6/7)
Step-by-step explanation:
6-0= -6
7-0= -7
-6/-7= 6/7
the residents of a city voted on whether to raise property taxes. the ratio of yes votes to no votes was 8 to 5. if there were 4955 no votes, what was the total number of votes?
A city's citizens cast ballots on whether or not to increase property taxes. There were 8 yes votes and 5 nay votes, in that order. if there were 4955 no votes,The total number of votes was 6,940.
The ratio of yes votes to no votes was 8 to 5, meaning for every 8 yes votes there were 5 no votes.
This ratio can be expressed as a fraction: 8/5.
To calculate the total number of votes, we need to know only the number of no votes, which we know is 4955.
We can then multiply this number by the fraction 8/5. This gives us a total of 6,940 votes.
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fifteen students are competing for 4 rotary scholarships, 1 in england, 1 in germany, 1 in brazil, and 1 in japan. in how many ways can the scholarships be awarded to different students?
The number of different ways of distributing the scholarships is 32,760.
consider the situation: fifteen students are competing for 4 Rotary scholarships.
consider each scholarship is to be a position In which a student assigned.
This is a permutation problem as:
A) each student selected from the same set.
b) No students can be selected twice.
c) The order in which students are assigned to three scholarships.
Four students are assigned in 4 activities For scholarships.
Activity A1: select a student from the set of 15 students for giving away the first scholarship.
Activity A2: select a student from remaining 14 students for giving away the second scholarship.
Activity A3: select a student from remaining 13 students for giving away the third scholarship.
Activity A4: Select a student from remaining 12 students for giving away the forth scholarship.
According to multiplication rule of accounting the number of different arrangements is A1 X A2 X A3 X A4
15 X 14 X 13 X 12=32760
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What is the quotient of three and one third ÷ three fourths?
Answer:
Read Below:
12 or 40/9
Unclear, please comment to clarify.
Step-by-step explanation:
Quotient: x, when: [tex]\frac{a}{b} = x[/tex], answer to a division problem.
This could be interpreted 2 ways:
[tex]\frac{(\frac{3}{1/3} )}{3/4}[/tex]
[tex]\frac{9}{3/4}[/tex]
12
or
3 1/3 = 10/3
[tex]\frac{10/3}{3/4}[/tex]
10/3 * 4/3
40/9
which two numbers when multiply gives you 15 and when added gives you -12?
Answer:
The numbers that when multiplied give 15 and when added give -12 are -3 and 5. Multiplying -3 by 5 gives -15, and adding -3 and 5 gives -8.
Explanation:
To find the numbers that when multiplied give 15 and when added give -12, we need to find two numbers that multiply to give -15 and add to give -12. One pair of numbers that satisfy these conditions is -3 and 5. When multiplied, -3 and 5 give -15, and when added, -3 and 5 give -8.
The sides of an rectangle are in the ratio of 3:7. If the area of the rectangle
is 3024, find the length and width of the rectangle. Enter two integers
separated by a comma, no spaces.
Answer:
Step-by-step explanation:
Step-by-step explanation:
length = 3x
breadth= 7x
area = 1029m2
area = length × breadth
(3x) × (7x)= 1029
now,
3×7=21
7×7=49
(verification 21×49=1029)
so length = 21
breadth = 49
now perimeter = 2(l+b)
=2(21+49)
=2(70)
= 140
so perimeter = 140m
help pls i don’t understand this cause my teacher can’t teach
Answer:
3/5
Step-by-step explanation:
AB = AC · cos A
18 = 30 · cos A
cos A = 18/30
cos A = 3/5
e^x+1=2^x+2
How do I solve this problem? (find x)
The solution to the equation eˣ + 1 = 2ˣ + 2 is x = 1.2
How to determine the solution to the equationFrom the question, we have the following parameters that can be used in our computation:
eˣ + 1 = 2ˣ + 2
Split to system of equations
This gives
y = eˣ + 1
y = 2ˣ + 2
Next, we plot the graph of the system of equations
In this case, the point of intersection of the equations represent the solution to the system
From the graph, the curves intersect at (1.2, 4.3)
This means that
x = 1.2 (approximated)
Hence, the solution is x = 1.2
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Given the equation 14.25y = 99.75, determine the value of y.
114.00
85.50
7.00
1421.44
The value of y in the equation 14.25y = 99.75 is C. 7.00.
How for determine the value of y?An equation is the statement that illustrates the variables given. In this case, two or more components are taken into consideration to describe the scenario. It is vital to note that an equation is a mathematical statement which is made up of two expressions that are connected by an equal sign.
In this case, the equation is given as:
14.25y = 99.75
Divide through by 14.25
y = 99.75 / 14.25
y = 7
The value of y is 7.
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A body of ma 80kg i lifted vertically through a ditance 5. 0 metre calculate the work done
4000 N is the work done .
In math, what is a distance?
The length of the segment of the line that connects the supplied two points determines the distance between them. The length of the shortest line segment connecting a point to a line represents the distance between them.
Distance is the sum of an object's movements, regardless of direction. Regardless of an object's starting or ending point, distance can be defined as the amount of ground it has traveled.
m = 80 kg
d = 5m
g = 10 m/s²
work done = force × distance
= mgh
= 80 × 10 × 5
= 4000 N
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A group of scientists discovered a small creature at the bottom of the ocean that they called a "piknit". when this interesting creature dies, it explodes itself into a number of baby piknits called gogles. the scientists randomly selected 20 piknits from the sea-floor and measured their respective weights in grams. after the piknits died they counted the number of gogles that each piknit produced. they wanted to know if the weight of the piknits can be used to predict the number of gogles.
What are the appropriate null and alternative hypotheses?
Null Hypothesis - H0: There is no linear relationship between the weight of pinknits and the number of gogles.
Alternative Hypothesis - Ha: There is a linear relationship between the weight of pinknits and the number of gogles.
To explain the concept behind this question we first need to know about the principle of correlation.
Correlation - It is a measure of comparison of two quantities by which we compute that which two quantities are linearly equal means that if we change one quantity the other will also change at a constant rate.
This principle simply makes a relationship without causing any effect on the quantities.
Now according to the question, we can see that,
Scientists have selected = 20 pinknitsThe scientists also measured their weights in gramsScientists also wanted to know if a number of gogles could be predicted using the weight of pinknits.Therefore, from the data that scientists predicted, we can conclude that,
Null Hypothesis - H0: There is no linear relationship between the weight of pinknits and the number of gogles.
Alternative Hypothesis - Ha: There is a linear relationship between the weight of pinknits and the number of gogles.
Option 4 is correct.
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A group of scientists discovered a small creature at the bottom of the ocean that they called a "piknit". When this interesting creature dies, it explodes itself into a number of baby piknits called gogles. The scientists randomly selected 20 piknits from the sea-floor and measured their respective weights in grams. After the piknits died they counted the number of gogles that each piknit produced. They wanted to know if the weight of the piknits can be used to predict the number of gogles.
What are the appropriate null and alternative hypotheses?
Group of answer choices
H0: There is no linear relationship between the weight of piknits and the number of gogles
Ha: There is a negative linear relationship between the weight of piknits and the number of gogles
H0: Weight of piknits is a useful predictor for the number of gogles
Ha: Weight of piknits is not a useful predictor for the number of gogles H0: There is a linear relationship between the weight of piknits and the number of gogles
Ha: There is no linear relationship between the weight of piknits and the number of gogles
H0: There is no linear relationship between the weight of piknits and the number of gogles
Ha: There is a linear relationship between the weight of piknits and the number of gogles
Find the average rate of change
Answer:
[tex]\frac{3}{5\pi}[/tex]
Step-by-step explanation:
[tex]\frac{f(5\pi/6)-f(0)}{5\pi/6}=\frac{3}{5\pi}[/tex]
Select the equations for the lines on the graph.
Answer:
second option
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
Red line
using (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (2, 8) ← 2 points on the line
m = [tex]\frac{8-0}{2-0}[/tex] = [tex]\frac{8}{2}[/tex] = 4 , then
y = 4x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (0, 0 ) then
0 = 4(0) + c
0 = 0 + c
0 = c
y = 4x + 0 , that is y = 4x ← equation of red line
Black line
using (x₁, y₁ ) = (0, 10) and (x₂, y₂ ) = (2, 8) ← 2 points on the line
m = [tex]\frac{8-10}{2-0}[/tex] = [tex]\frac{-2}{2}[/tex] = - 1
the line crosses the y- axis at (0, 10 ) ⇒ c = 10
y = - x + 10 ← equation of black line
Multiple choice math
The solution of the three variable system will be (- 8, 4, - 4).
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The system of equation are,
⇒ - 5x + y - 4z = 60
⇒ 2x + 4y + 3z = - 12
⇒ 6x - 3y - 2z = - 52
Now,
Since, The system of equation are,
⇒ - 5x + y - 4z = 60
⇒ 2x + 4y + 3z = - 12
⇒ 6x - 3y - 2z = - 52
From option c;
⇒ (x, y, z) = (- 8, 4, - 4)
So, Put x = - 8, y = 4 and z = - 4
We get;
⇒ - 5x + y - 4z = 60
⇒ - 5 × - 8 + 4 - 4 × - 4 = 60
⇒ 40 + 4 + 16 = 60
⇒ 60 = 60
And, ⇒ 2x + 4y + 3z = - 12
⇒ 2 × - 8 + 4 × 4 + 3 × - 4 = - 12
⇒ - 16 + 16 - 12 = - 12
⇒ - 12 = - 12
⇒ 6x - 3y - 2z = - 52
⇒ 6 × - 8 - 3 × 4 - 2 × -4 = - 52
⇒ - 48 - 12 + 8 = - 52
⇒ - 52 = - 52
Thus, The solution of the three variable system = (- 8, 4, - 4).
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Please help me with this question
many thanks
find the centroid of the region in the first quadrant bounded by the given curves. y = x6, x = y6
The area of centroid of the region in the first quadrant bounded by the given curves. y = x6, x = y6 is 17 units.
The centroid can be found if we will integrate the result obtained by subtracting the given two functions .
∫ f(x) - g(x) dx
The limits will be a and b where a = 0 and b =1.
f(x )= x⁶
g(x) =y⁶
= ∫ x⁶ - y⁶dx
=∫ x⁶dx - ∫ y⁶dx
= 1/7 x⁷ - 1/7 x⁷
Now since limits are 0 and 1 ,
1/7 1⁷ - 1/7 0⁷
=17 units
The central point of any geometric figure is known as centroid.
Different figure have different centroid and the all have unique properties.
Integration is a branch of calculus which means to add things up to form a whole.
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I only require the explanation, not the answer.
The children in a class state how many children there are in their family.
The numbers they state are given below: 1, 2, 1, 3, 2, 1, 2, 4, 2, 2, 1, 3, 1, 2, 2, 2, 1, 1, 7, 3, 1, 2, 1, 2, 2, 1, 2, 3
So the question that I do not understand is:
Which is the most sensible average to use in the case.
The person with the most through explanation will get brainliest and will get awarded 75 points!
The most sensible average to use in this case would be the mode, which is the value that appears most frequently in the data set. In this case, the mode is 2, which appears 9 times in the data set. This means that the most common number of children in a family in the class is 2.
In this case, the most sensible average to use would be the mode, which is the number that appears most frequently in the data set. This is because the mode represents the most common number of children in the families of the children in the class, which is likely to be a more accurate representation of the typical family size in the class than the mean or median.
To find the mode, we first need to count how many times each number appears in the data set. In this case, the numbers 1, 2, 3, and 4 appear in the data set as follows:
1: 7 times
2: 11 times
3: 3 times
4: 1 time
We can see that the number 2 appears most frequently, with a count of 11. Therefore, the mode in this case is 2, and this is the most sensible average to use in this situation.
in the equation 0.5x - 8 + 1.5 , the decimal coefficient is ____??
Answer:
0.5
Step-by-step explanation:
A coefficient is a number that multiplies an unknown
There is a line that includes the point (9,1) and has a slope of -1/6. What is its equation in point-slope form?
It's equation in point-slope from is -1/6x+5/2.
What is equation?An equation is a formula that is express the equality of two equation.
Based on the given condition the formula
M= -1/6
Substitute {m -1/6
{ X= 9
{Y = 1
(Into y= mx+b)
1=-1/6×9+b
Reduce the expression into the Lowest term
1=-1/2×3+b
Write as a single fraction
1=-3/2+b
Rearrange variables to the left side of the equation.
-b= -3/2-1
Now we have to find the denominator and write the numerators above common denominator
-b=-3-2/2
Calculate the sum or difference
-b=-5/2
b=5/2
Substitute {m=-1/6 b=5/2 into y mx+b
Y=-1/6x+5/2
Rewrite the equation of the line
Y= -1/6x+5/2 in point-slope
Y-1 = -x-9/6
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what is 52,437 rounded to the nearest hundred.
Answer: 52,000
Step-by-step explanation: Because we are rounding to the nearest hundred, we only need to focus on the #'s 4, 3, and 7 in 52,437. So, 3 is less than 5, so we have to round down to 3 (stays the same) and 4 is less than 5 so, we round down to 4 (also stays the same), and since 7 is greater than 5, we can round up to 440. But, 440 is still less than 500, so your final answer should be 52,000.
Tom is shopping for school supplies at CVS. The cost of 3 markers and 2 pencils came
out to be $1.80. When Angie went shopping at the same CVS, her cost of 4 markers and
6 pencils was $2.90. Determine the cost of 1 marker and 1 pencil.
Answer:
Marker = $0.50
Pencil = $0.15
Step-by-step explanation:
The cost of 3 markers and 2 pencils can be represented as 3M + 2P = $1.80.
The cost of 4 markers and 6 pencils can be represented as 4M + 6P = $2.90.
Now that we have our two equations, we can solve for M and P. To do this, we can eliminate one of the variables by multiplying one equation by a constant and adding the two equations together.
For example, if we multiply the first equation by 4 and the second equation by -3, we get:
12M + 8P = $7.20
-12M - 18P = -$8.70
Adding these two equations together, we get:
-10P = -$1.50
Dividing both sides by -10, we get:
P = $0.15
Now that we have found the value of P, we can substitute it back into one of our original equations to find the value of M. If we substitute P = $0.15 into the first equation, we get:
3M + 2($0.15) = $1.80
3M + $0.30 = $1.80
3M = $1.50
M = $0.50
So, the cost of 1 marker is $0.50, and the cost of 1 pencil is $0.15.
Bo went to the grocery tore and bought ome bottle of oda and bottle of juice. Each bottle of juice ha 25 gram of ugar. Bo purchaed a total of 7 bottle of juice and oda which collectively contain 250 gram of ugar. Determine the number of bottle of oda and juice purchaed. Someone tell me how to write out the equation, I know the anwer I jut need the written out equation
The two simultaneous equations are 50x + 25y = 250 and x + y = 7
What are simultaneous equations?Simultaneous equations are a set of two or more equations that contain variables. The values of the variables can be calculated using either method of elimination or substitution. The values of the variables must then satisfy all the equations
How to make simultaneous equations from given information?Assuming the bottle of soda has 50 grams of sugar in each bottle (since this information is not given). Let the bottles of soda bought be x and bottles of juice bought be y. Two equations will be formed so that we can solve them simultaneously.
50x = total amount of sugar in soda bottles
25y = total amount of sugar in juice bottles
50x + 25y = 250 (total amount of sugar in all bottles)
x + y = 7 (total number of bottles)
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a shipment of 14 televisions sets contains 4 defective sets. a hotel purchases 8 of these televisions sets. what is the probability that the hotel receives at least one of the defective sets?
The probability that the hotel receives at least one of the defective sets is 0.571 or 57.1%.
The probability of receiving at least one of the defective sets is calculated using the formula for the binomial distribution. The formula has 3 variables: the number of trials (n) being 8, the probability of success (p) being 0.286 (4 defective sets divided by 14 total sets) and the number of successes (k) being 1. We calculate the probability by plugging the variables into the formula and summing the probabilities of all the k values from 1 to 8. This gives us a probability of 0.571 or 57.1%.
P(k≥1) = Σ P(X=k)
= P(X=1) + P(X=2) + P(X=3) + P(X=4) + P(X=5) + P(X=6) + P(X=7) + P(X=8)
= 0.286^1.0 x 0.714^7.0 + 0.286^2.0 x 0.714^6.0 + 0.286^3.0 x 0.714^5.0 + 0.286^4.0 x 0.714^4.0 + 0.286^5.0 x 0.714^3.0 + 0.286^6.0 x 0.714^2.0 + 0.286^7.0 x 0.714^1.0 + 0.286^8.0 x 0.714^0.0
= 0.571 or 57.1%
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What is a triangle? How do you name a triangle using three vertices? Give an example.
A triangle is closed, with a 2-dimensional shape with 3 sides, 3 angles, and 3 vertices.
A triangle is a three-sided polygon that consists of three edges and three vertices.
The labels of the vertices of the triangle, which are generally used in capital letters, are used to name a triangle and we can call the triangle ABC since A, B, and C are vertices of the triangle.
Parts of a Triangle:
A triangle has 3 sides, which consist of ABC, the sides are AB, BC, and CA. The angle formed by any two sides of a triangle is the angle of the triangle, denoted by the symbol ∠.
A triangle has three angles, whose angles of triangle ABC are ∠ABC, ∠BCA, and ∠CAB. These angles are also called ∠B, ∠C, and ∠A.
The point of intersection of any two sides of a triangle is known as a vertex. A triangle has three vertices. In triangle ABC, the vertices are A, B, and C.
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[tex]\frac{12}{y-x}[/tex] to a denominator of [tex]x-y[/tex]. What will the numerator be?
pls help
When 12 / (y -x) is a denominator of x - y the numerator will be
(x - y) (y -x)How to find the numerator of the fractionThe problem involves division of fractions
The fractions is a number type that has two major divisions,
the numerator : the number at the top
the denominator: the number below or at the bottom
The division of the fraction: In this case the denominator is the divisor
= (x - y) ÷ 12 / (y -x)
inverting the divisor of the fraction
= (x - y) * (y -x)/12
= { (x - y) * (y -x) } / 12
the numerator is (x - y)(y -x)
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