Answer:
The test statistic is 1.57.
Step-by-step explanation:
Our test statistic is:
[tex]t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
A Seattle department store samples 89 items sold in January and found that 10 of the items were returned.
This means that [tex]n = 89, X = \frac{10}{89} = 0.1124[/tex]
7% of all merchandise sold in the United States gets returned.
This means that [tex]\mu = 0.07[/tex]
For a proportion, the standard deviation is [tex]\sigma = \sqrt{p(1-p)} = \sqrt{0.07*(1-0.07)} = 0.2551[/tex]
Test statistic:
[tex]t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]t = \frac{0.1124 - 0.07}{\frac{0.2551}{\sqrt{89}}}[/tex]
[tex]t = 1.57[/tex]
The test statistic is 1.57.
» Round 13.045 to the nearest whole number.
Answer:
13
Step-by-step explanation:
Have a good day
Suppose that you have 10 green cards and 5 yellow cards. The cards are well shuffled. You randomly draw
two cards without replacement.
G = the first card drawn is green
G2 = the second card drawn is green
a. P(G, and G2) -
b. P(At least 1 green)
C. P(G2G) -
d. Are G, and G2 independent?
They are independent events
They are dependent events
09
Answer:
Dependent
Step-by-step explanation:
because which ever coloured card you draw at first changes the probability of the second draw
Answer:
dependent
Step-by-step explanation:
the first card drawn
HELP PLEASE ASAP MARKING BRAINLY
With the knowledge that m∠1 = 81°, let's use these relationships to find the rest of the angles:
1 and 3 are vertical: their angle measures are the same, so m∠3 = 81°1 and 4 are corresponding: their angle measures are also the same, so m∠4 = 81°Finally, 1 and 2 are supplemental: their angle measures add up to 180°, so 81 + m∠2 = 180, making m∠2 = 99°The equation 3x + 2 = 29 is modeled below.
Which is the first step in solving the equation for x?
Answer:
Subtract 2 from both sides.
Step-by-step explanation:
Remember to do the opposite of PEMDAS. PEMDAS is the order of operation, and stands for:
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
> Also, note the equal sign, what you do to one side, you do to the other side of the equation.
First step is to subtract 2 from both sides of the equation:
3x + 2 (-2) = 29 (-2)
3x = 29 - 2
3x = 27
The second step is to divide 3 from both sides of the equation:
(3x)/3 = (27)/3
x = 27/3
x = 9
~
Answer:
The first step is subtracting the two on both sides.
Step-by-step explanation:
You arent exactly following PEMDAS in this equation, but you are still in a way. Before going on to x you need to go on to the numbers first. 3x would be equal to 27.
sorry forgot to add a photo to the ones who answered my other one
Answer:
Step-by-step explanation:
8.5x16=136
What’s the volume of a cylinder with a base of 25 and height of 6
x² - 121
What is a factored form of this expression
Answer:
(x+11)(x-11)
Step-by-step explanation:
(x+11)(x-11)
Answer:
(x+11)(x-11)
Step-by-step explanation:
If you factor it out, it works.
Which of the following have both 2 and −5 as solutions?
Answer:
Picture pls
Step-by-step explanation:
Answer:
Need more
Step-by-step explanation:
The sum of all the solutions of the equation (6x+k)(3x-11)=0 is 1. Find K
BRANLIEST PLUS 20 POINTS
Answer:
16
Step-by-step explanation:
6x+k = 0
x = -k/6
3x-11 = 0
x = 11/3
-k/6 + 11/3 = 1
k - 22 = -6
k = 16
The value of k is "8".
Find K:[tex](6x+k)(3x-11)=0\ \ is \ \ 1 \\\\K=?[/tex]
[tex]\to (6x+k)(3x-11)=0 \ \ is \ \ 1 \\\\\to (6x+k)=0\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and \ \ \ \ \ \ \ \ \ \ \ \ \ \ (3x-11)=0\\\\\to 6x=-k\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and \ \ \ \ \ \ \ \ \ \ \ \ \ \ 3x=11\\\\\to x=-\frac{k}{6}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=\frac{11}{3}\\\\[/tex]
[tex]\to - \frac{k}{6}+ \frac{11}{3}=1\\\\\to \frac{-2k+ 22}{6}=1\\\\\to -2k+ 22=6\\\\\to -2k =6-22\\\\\to -2k =-16\\\\\to k=\frac{16}{2}\\\\\to k=8[/tex]
Therefore, the final value of k is "8".
Learn more about the find k here:
brainly.com/question/20041760
Simplify 1/8 - 1/9 x+3/4-2/3x
Answer:
7/8 - 7x/9
Step-by-step explanation:
;)
PLZ PLZ HELP
I WILL MARK YOU BRILL
Answer:
Median is 3
Mean is 2.8
Im 95% sure this is correct, though if you want to double check
To find the median you would line all the numbers in order from least to greatest, then usually I would draw lines connecting the first to the last until each is paired, if it is a single digit left over then it the median is that digit, it its two left then you add them together and divide by two for the median.
For the mean add all the numbers together and divide by the total number of numbers.
Step-by-step explanation: In your problem, we're finding the mean and median. Let's do it step-by-step.
1. To find the Median, we arrange the data in an ascending order and it's middle value. If the numbers of values is an even number (2, 4, 6, 8, 10), the median will be the average of the 2 middle numbers.
Therefore, the Median is 3.
2. The Mean is the set of numbers of the sum divided by the number of terms.
Therefore, the Mean is 2.8.
y=mx+b
What does mx stand for in the equation y=mx+b
I have to find out what m
HHEEEEEEEELLLLPPPPPPPP 11 POINTS
Please help :D
Will Give Brainliest
*attached screenshot*
Thanks to everyone :)
7(2)+7(5) {using distributive property}
14+35 {7 multiplied by 2 gives 14 and 7 multiplied by 5 gives 35}
49 {therefore 35+14 gives 49}
Create a simple ER model depicting entities and relationship lines for each data scenario.
A college needs to track placement test scores for incoming students. Each student can take a variety of tests, including English and math. Some students are required to take placement tests because of previous coursework.
Answer:
Please find the ER model in the attachment file.
Step-by-step explanation:
the product of 9 and the diffrence of 6 and 4 into a numerical expression
Answer:
9(6 - 4)
Step-by-step explanation:
9(6 - 4)
9 x 2 = 18
18 is your answer to the expression
hope this helps
hope this is right
The dot plot below shows the number of fish caught by each person on a drift boat. Which statement correctly describes the center value of the data?
The center is 3.5 because it is the value in the middle of the recorded values. The center is between 4 and 5 because those are the middle values on the scale. The center is 5 because it is the difference between the highest value and lowest value. The center is 4 because 4 is the value in the middle when all of the values are ordered from least to greatest.
Answer:
The center is 4 because 4 is the value in the middle when all of the values are ordered from least to greatest.
Step-by-step explanation:
The center point lies in the middle of the data. This is the point where the midpoint of data set is located. In the given dot plot the data is in descending order and when the data is observed the middle value is 4. The middle value can be between 4 and 5 in case if the data set was observed according to class preference and frequency would have been given separately.
In an arithmetic sequence, u1 = 1.3 , u2 = 1.4 and uk = 31.2.
7a. Find the exact value of Sk
a metal pile is 500cm long correct to the nearest centimeter the pole is cut into rods each of length 5.8cm correct to the nearest millimeter calculate the largest rod the pole can be cut into
Answer:
86 pieces
Step-by-step explanation:
Given
[tex]Pole = 500cm[/tex]
[tex]Pieces = 5.8cm[/tex]
Required
Determine the largest number of rods
To do this, we simply divide the length of the pole by the length of each piece.
[tex]Number = \frac{Pole}{Pieces}[/tex]
[tex]Number = \frac{500cm}{5.8cm}[/tex]
[tex]Number = \frac{500}{5.8}[/tex]
[tex]Number = 86.2068965517[/tex]
Round down
[tex]Number = 86[/tex]
least common denominator of 2/5 and 3/10
What is the slope?
Simplify your answer and write it as a proper fraction, improper fraction, or integer.
ANSWER ASAP:
Shayla wants to buy some CDs that each cost $14 and a DVD that costs
$23. She has $65 that she is able to spend. Which equation can be used to
determine how many CDs Shayla could buy?
Write a slope-intercept form of the equation of the line passing through the points(-1,-5) and(-3,5).
i really need help pleaseee
Answer:
We conclude that:
cosecant (U) = 13/12Step-by-step explanation:
Given the right-angled triangle ΔUWV, it is clear that
The opposite of angle ∠U = 24The hypotenuse = 26Using the trigonometric ratio, we know that
sin Ф = opposite / hypotenuse
cosecant Ф = 1/ sin Ф
Thus,
cosecant Ф = hypotenuse / opposite
substituting Ф = U, hypotenuse = 26 and opposite = 24
cosecant (U) = 26 / 24
cosecant (U) = 13/12
Therefore, we conclude that:
cosecant (U) = 13/12Kimberly worked for 2 weeks. The shaded parts of the model represent the fraction of each week she worked from home.
Which expression can be used to determine the number of weeks Kimberly worked from home over these 2 weeks?
Answer
she worked 1 week and 1 day
Step-by-step explanation
The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues.
Answer:
Step-by-step explanation:
An angle measures 86.4° less than the measure of its supplementary angle. What is the measure of each angle?
Answer:
nsksnekwksnskswkwksks
Polygon LMNPQ is shown on the coordinate grid. What is the preempted of polygon LMNPQ
The question is incomplete. Here is the complete question.
Polygon LMNPQ is shown on the coordinate grid. What is the perimeter of polygon LMNPQ?
A. [tex]2+12\sqrt{2}[/tex] units
B. [tex]7+2\sqrt{2}[/tex] units
C. [tex]10+4\sqrt{2}[/tex] units
D. [tex]12+2\sqrt{2}[/tex] units
E. [tex]12+4\sqrt{2}[/tex] units
Answer: E. [tex]12+4\sqrt{2}[/tex] units
Step-by-step explanation: Perimeter of a figure is the sum of all of its sides.
The polygon is drawn on a plane. The distance between a pair of points will give that side its measure.
Distance of two points is calculated as
[tex]d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}[/tex]
Segment MN:
Coordinates: M (2,4) and N (5,8)
[tex]d=\sqrt{(5-2)^{2}+(8-4)^{2}}[/tex]
d = 5
Segment ML:
Coordinates: M (2,4) and L (4,2)
[tex]d=\sqrt{(2-4)^{2}+(4-2)^{2}}[/tex]
[tex]d=2\sqrt{2}[/tex]
Segment NP:
Coordinates: N (5,8) and P (8,4)
[tex]d=\sqrt{(5-8)^{2}+(8-4)^{2}}[/tex]
d = 5
Segment PQ:
Coordinates: P (8,4) and Q (6,2)
[tex]d=\sqrt{(8-6)^{2}+(4-2)^{2}}[/tex]
[tex]d=2\sqrt{2}[/tex]
Segment LQ:
Coordinates: L (4,2) and Q (6,2)
[tex]d=\sqrt{(6-4)^{2}+(2-2)^{2}}[/tex]
d = 2
Calculating perimeter (P):
P = MN + ML + NP + PQ + LQ
P = [tex]5+2\sqrt{2}+5+2\sqrt{2}+2[/tex]
P = [tex]12+4\sqrt{2}[/tex]
Perimeter of polygon LMNPQ is [tex]12+4\sqrt{2}[/tex] units
solve similar triangles (advanced) solve for x
Step-by-step explanation:
this is the answer of given question
Is the answer true?
Answer:
but I'm not sure
yes I think it is true