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Natali5045456 [20]
3 years ago
8

A graduate student wanted to estimate the average time spent studying among graduate students at her school. She randomly sample

d graduate students from her school and obtained a 99% confidence interval of (17,25) hours/week. Which of the following would be true if the level of confidence was lowered to 95%? Choose the correct answer below.A. The width of the confidence interval would remain the same.B. The width of the confidence interval would be smaller.C. The width of the confidence interval would be larger.D. More information is needed to determine what would happen to the width of the confidence interval.
Mathematics
1 answer:
expeople1 [14]3 years ago
3 0

Answer:

B. The width of the confidence interval would be smaller.

Step-by-step explanation:

By reducing the confidence level from 99% to 95%, the student assumes that there is more uncertainty about the new confidence interval than the previous one. That, being said, since the results aren't as certain, the confidence interval is widened towards a central average point because the new interval isn't as accurate.

Therefore, the answer is B. The width of the confidence interval would be smaller.

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Answer:

$2.95

Step-by-step explanation:

$22.95-$20

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In a right triangle, the length of one leg is 6 units. The length of the other leg is 8 units. What is the length of the hypoten
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A father’s age now is three times the age that his son was 4 years ago. In
Mice21 [21]
Let ‘s’ be the son’s age 12 years ago.
Let ‘f’ be the father’s current age.

4 years ago, the son was:

s-4

So, his father is currently:

3(s-4)

=

3s-12

Therefore:

f = 3s-12

In twelve years, the son will be:

s+12

And the father will be:

f+12

This can also be written as:

3s-12+12 as the fathers younger age would be f = 3s+12

=

3s

So, we know that s+12 is half the fathers current age, meaning the father is currently 2(s+12) which is equivalent to 2s+24. Also, we know that the father is currently 3 times the sons age 12 years ago, so 3s (proven by the calculations we made above). Therefore, 2s+24=3s which means 24=s. We can then substitute this, and we will receive 24+12 = 36

Son’s current age: 36

We then substitute the son’s age 12 years ago into 2s+24 to give us the father’s age.

2(24)+24 = 72

Father’s current age: 72










7 0
2 years ago
[Help asap, will mark brainliest] Refer to the diagram shown to classify the relationship between each angle pair.
Anastasy [175]

Answer:

a) corresponding

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d) supplementary

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Step-by-step explanation:

I hope this helps :)

8 0
2 years ago
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Please need help on this one
AysviL [449]

Answer:

45°

Step-by-step explanation:

The base angle are the same measure and since one angle is already 90° the remaining two are 45°. They have to equal up to 180. 90 + 45 + 45 = 180.

Hope this helps ya!!

8 0
3 years ago
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