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Arturiano [62]
3 years ago
12

Construct a​ 95% confidence interval for the population​ mean, mu. Assume the population has a normal distribution. A sample of

25 randomly English majors has a mean test score of 81.5 with a standard deviation of 10.2. A. ​(77.29, 85.71) B. ​(66.35, 69.89) C. ​(56.12, 78.34) D. ​(87.12, 98.32)
Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

reeeeeeeeeeeee

Step-by-step explanation:

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nevsk [136]
(1,-3) is the answer i believe but not 100% sure

5 0
3 years ago
Polygon ABCDE ~ Polygon FGHIJ<br> What is the scale factor of polygon ABCDE to polygon FGHIJ?
Nataly [62]

Answer:

A. \frac{1}{3}

Step-by-step explanation:

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5 0
2 years ago
Do<br><br> 5cm<br> 5cm<br> 15 cm<br><br> form a triangle?
Ivahew [28]

Answer:

No

Step-by-step explanation:

No, 5cm, 5cm, and 15cm cannot create a triangle because the side lengths do not follow the formula a + b > c. Since 5 + 5 = 10, and 10 is not greater than 15, these side lengths won't be able to form a triangle.

Hope this helps!!

8 0
2 years ago
Stephanie surveyed the students in her class to find out their favorite color. her results are in the table. what percent of Ste
wariber [46]
Hi there!

To solve this problem, we need to find the amount of classmates out of the entire class who did not choose blue as their favorite color and then convert it into a percentage. 

First, let's find the fraction:

Since there are 25 total people in her class, since

6 + 9 + 10 = 25

25 is the denominator of the fraction;

Since there are 16 people who did not choose blue,

6 + 10 = 16

16 is the numerator of the fraction. 

So, our fraction is 16/25. 

Now, we need to convert it into a percentage. To do this, we need to make the denominator 100 by multiplying it by a certain number, and then multiplying the numerator by that same number so the fraction stays equal:

16/25 
= 16*4/25*4
= 64/100
= 64%

So, the answer is 64% of Stephanie's classmates.

Hope this helps!
3 0
3 years ago
What is the value of x?
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39 degrees is the measure of the 3rd. Hope I helped. :) Please click thanks.  :)
8 0
3 years ago
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