Answer:
The value is [tex]\mu_{x} = 5.6 \ years[/tex]
Step-by-step explanation:
From the question we are told that
The population mean is [tex]\mu = 5.6 \ years[/tex]
The standard deviation is [tex]\sigma = 0.9 \ years[/tex]
The sample size is n = 49
Generally given that the sample size is large enough, the sampling distribution created using the samples of the ages at which 49 children begin reading is equal to the population mean
i.e
[tex]\mu_{x} = \mu[/tex]
=> [tex]\mu_{x} = 5.6 \ years[/tex]
HELP ME OUT REALLY FAST PLEASEE
Answer:
1 5/6
Step-by-step explanation:
Answer:
The answer is C
A sample of 68 electric motors had a mean efficiency of 0.595 (assume that the standard deviation is known to be 0.05). Let μ represent the mean efficiency of electric motors of this type.
Find the P-value for testing H0 : μ ≥ 0.6 versus H1 : μ < 0.6.
P-value =
The p-value for the test hypothesis is of 0.4681.
How to find the p-value of the test?We are working with proportions in this problem, hence the z-distribution is used, first we find the test statistic, and then with the test statistic, we find the p-value.
The test statistic is given according to the following rule:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
In which the parameters of the formula are described as follows:
[tex]\overline{p}[/tex] is the sample proportion.p is the proportion tested at the null hypothesis.n is the sample size.In the context of this problem, the values of these parameters are given by:
[tex]p = 0.6, \overline{p} = 0.595, n = 68[/tex]
Hence the test statistic is given by:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
[tex]z = \frac{0.595 - 0.6}{\sqrt{\frac{0.6(0.4)}{68}}}[/tex]
z = -0.08
Using a z-distribution calculator, with a left-tailed test, as we are testing if the proportion is less than a value, the p-value is of 0.4681.
More can be learned about the z-distribution at https://brainly.com/question/13873630
#SPJ1
What is the greatest common factor of 2a^2b^3 and 4a^3b^3
Answer:
4a^(3)b-8a^(2)b^(2)+2ab^(3)
Step-by-step explanation:
What is the next number in the sequence? 3, 9, 15, 21, ?
Answer: 27
Step-by-step explanation:
supposed to ad 6 everytime
Answer:
Your next number would be 27
Step-by-step explanation:
3+6=9
9+6=15
15+6=21
21+6=27
Here is a list of numbers:
0, 10,-18, 7, -14,-7,7,-14,13,0
State the median.
What slope would make the lines
perpendicular?
y = -x + 2
y = [?]x – 1
Answer:
The inverse reciprocal.
The slope of a perpendicular line is always the inverse reciprocal.
Answer:
3Step-by-step explanation:
Slope-Intercept Form: y = mx + b
m - slope
b - y-intercept
The slope m of a perpendicular line is always the inverse reciprocal.
Therefore, our mperpendicular is 3.
Sabrina bought a hoodie at the store when they were having a 25% off sale. If the regular
price of the hoodie was $50, how much did Sabrina save?
Answer:
$12.50
Step-by-step explanation:
Answer:
$12.50
Step-by-step explanation:
The sale is for 25% off, so she saved 25% of $50.
25% of $50 = 0.25 * $50 = $12.50
What is the percent increase when 7200 increases by 1800? 20 percent 25 percent
Answer:
7200+1800=9000
7200/1800= 72/18= 8/2= 4
100/4 = 25
Find slope plz and ty!!
Answer:
1/2
Step-by-step explanation:
m=y2-y1/x2-x1
8-6=2
10-6=4
(2/4)/2=(1/2)
hope this helps :3
if it did pls mark brainliest
What is the missing number? 7 1 1 B
Answer:
1/8
Step-by-step explanation:
Mr. Chengs class has 28 students 4/7 of whom are girls which equation shows how do you determine the number of girls in Mr. Chengs class
Okay so I am confused about a few questions so I'll ask a few.
How do I find the x and y intercepts if they exist, the vertex, and the axis or line of symmetry, and put the function in general form?
f(x) = -2(x + 1)² -4
I WILL GIVE BRAINLIEST
Three weeks ago, an art supply store started selling a paint kit for 75% of the original price. Now the kit is 15% off of the sale price. The expression 0.75x - 0.15(0.75x) represents the current price of the paint kit where x is the kit’s original price (in dollars). Find the current price of the kit if it originally cost $48.
Answer:
$30.60
Step-by-step explanation:
0.75X-0.15(0.75X)
0.75(48)-0.15(0.75(48))
0.75(48)-0.15(36)
36-0.15(36)
36-5.4
30.6
For the suffering you can buy a 6 oz pack of suffering mix for $ $1.98 .The label says a serving size is 1/6 of the Package. If the serving size is 1/6 of the package how many people will 1 package serve?
Answer:
6... if the serving size is 1/6 of the package, that means it will serve 6 people
Step-by-step explanation:
Given the following relations on the set of all people. Check ALL correct answers from the following lists: (a) a is older than b A. symmetric B. irreflexive C. reflexive D. antisymmetric E. transitive
Comlete question is;
Given the following relations on the set of all people. Check ALL correct answers from the following lists:
(a) a is older than b;
A. antisymmetric
B. irreflexive
C. transitive
D. reflexive
E. symmetric
(b) a and b have a common grandparent;
A. reflexive
B. symmetric
C. irreflexive
D. transitive
E. antisymmetric
(c) a has the same first name as b;
A. reflexive
B. irreflexive
C. transitive
D. symmetric
E. antisymmetric
(d) a and b were born on the same day;
A. symmetric
B. reflexive
C. transitive
D. antisymmetric
E. irreflexive
Answer:
a) Options A, B & D.
b) Options C & D.
c) Options C, D & E
d) Options A, B & C
Step-by-step explanation:
a) Options A, B & D.
- It's irreflexive because b is not older than a.
- It's transitive because if a is older than b as we are told and b is older than c, then we can say that a is older than c.
- It's antisymmetric because if a is older than b, then we can say that b is not older than a.
b) Options C & D.
- It's symmetric because if a & b have a common grandparent, then we can say that b and a have a common grandparent.
- It's reflexive because a and b have common grandparents and thus implies all of a's grandparents.
c) Options C, D & E are correct.
It could be Transitive, symmetric or antisymmetric.
d) Options A, B & C are correct.
If a point with the coordinates (2,3) is dilated from origin by a scale factor of 2, what are the coordinates of the dilation?
Answer:
(4,6) it would be......
what is 1 billion in standard form?
Answer:
i think 1,000,000,000
Step-by-step explanation:
5.5+7[(6.3+2.1)x4+(10–4) divided by2]
Answer:
261.7
Step-by-step explanation:
Plz hurry
Solve: Ix+91<-5.
A. infinite solutions
B. one solution
C. no solutions
D. all real numbers
Answer:
c
Step-by-step explanation:
Fact families for 4 3 and 12
Answer:
i have 5 sisters my dad and mom are still married and im the youngest
Kevin was having so much fun making cupcakes for his class. He made 2 dozen of them! But there are only 19 kids in his class. Luckily everyone are one cupcake except for Emma. How many cupcakes are left over?
angles
l'angle
surent
du
devoirs
à la maison
78 Le puzzle de Pythagore
1. a. Construire le triangle PIA rectangle en I tel
que Al = 6 cm, pl = 4,5 cm et PA = 7,5 cm.
b. Construire, à l'extérieur de ce triangle, trois
carrés PABO, LAID et PIRE.
2. Partager le carré LAID en 4 pièces de la
manière suivante :
- tracer la droite parallèle à (PA) passant par l:
- tracer la droite perpendiculaire à (PA) pas-
sant par D.
3. Découper et colorier les 4 pièces obtenues à
partir du carré LAID ainsi que le carré PIRE.
4. À l'aide de ces 5 pièces, reconstituer à la
manière d'un puzzle le carré PABO. Coller ainsi
ces pièces sur le carré PABO puis coller le tout
sur la copie.
5. En déduire une égalité entre les aires des trois
carrés PABO, LAID et PIRE.
6. En posant a = AI, b = PI et c = PA, retrouver
l'égalité de Pythagore dans le triangle PIA.
naque
com-
-que
poté-
Answer:
cvdgcbhxnjkmz,
Step-by-step explanation:
some one help me with this im lost
Answer:
We will turn the 1/5 into 1/10, then 1/10 into 2/10 because of the 10%. Then, we will have 8/10 left.
Find the slope of the line through the given points.
16 11 and 17-21
describe how you would graph 2x+3y=6
Answer:
First get y by itself. (y=-2/3x +2). The y-intercept is at 2 and the slope is -2/3 so starting at (0,2) you would go down two and right three and continue doing that to create your graph.
Step-by-step explanation:
Desmos is always a good option for checking your graphs :)
A glass is
1
6
full. Then 95cm3 of orange juice is poured in.
The glass is now
4
5
full. What is the total volume of the glass?
Answer:
let x = the amount of orange juice in a full glass.
the glass is 1/6 full = 1/6 * x
add 95 cubic centimeters and the glass becomes 4/5 full.
equation for that is:
1/6 * x + 95 = 4/5 * x
subtract 1/6 * x from both sides of this equation to get:
95 = 4/5 * x - 1/6 * x
multiply 4/5 * 6/6 and multiply 1/6 * 5/5 and the equation becomes:
95 = 24/30 * x - 5/30 * x
combine like terms to get 95 = 19/30 * x
multiply both sides of the equation by 30/19 to get:
30/19 * 95 = 30/19 * 19/30 * x
simplify to get:
30/19 * 95 = x
solve for x to get x = 150.
the volume of the glass is 150 cubic centimeters.
1/6 * 150 = 25
4/5 * 150 = 120
the difference between 4/5 full and 1/6 full is 95 cubic centimeters.
solution is that the volume of the glass is 150 cubic centimeters.
Step-by-step explanation:
someone please help
Answer:
<D=<N
Step-by-step explanation:
Corresponding angle, both in third digit, others are in different digits.
PLS GIVE BRAINLIEST
Answer:
Step-by-step explanation:
∠D≅∠N
because if you write them in the same order they will be coresponding parts
True or False?
To create more batches of a color recipe that will come out to be the same shade of the color, multiply each ingredient by the same number
Answer:
True
Step-by-step explanation:
$100 if you answer my question
Answer:
hmm
Step-by-step explanation:
Solve these 2 problems please
Answer:
7 and 10
3 - 7 is -4
1- + 10 is 9
Answer: 8 degrees
Step-by-step explanation:
3-2-1-0-1-2-3-4