In a sample of n=3,600 students, the average GPA was x⎯⎯=3.5 with a sample variance of...

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In a sample of n=3,600 students, the average GPA was x⎯⎯=3.5 with a sample variance of...

In a sample of n=3,600 students, the average GPA was x⎯⎯=3.5 with a sample variance of s2=0.25. Calculate the 98% confidence interval for the population GPA μ

Holding everything constant, how would your confidence interval change if you wanted to have only 90% confidence in the population mean?

Question 6 options:

	It would stay the same
	It would get wider
	It would get narrower
	This answer cannot be answered without additional information.

math Statistics-And-Probability

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Answer 1

Answer #1

Answer:

It would get narrower

Explanation:

We know that as we decrease the confidence level, the margin of error or width of the confidence interval decreases. This means, confidence interval would get narrower when we decrease the confidence level from 98% to 90% by assuming all other factors constant.

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Answer 2

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In a sample of n=3,600 students, the average GPA was x⎯⎯=3.5 with a sample variance of...

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