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A survey of 25 randomly chosen students at a particular college found that the mean number of years the students were out of school before enrolling at the college was 7.6 years, with a sample standard deviation of 1.4 years. Find the 99% confidence interval for the mean number of years the students were out of school before enrolling at the college.

A survey of 25 randomly chosen students at a particular college found that the mean number of years the students were out of school before enrolling at the college was 7.6 years, with a sample standard deviation of 1.4 years. Find the 99% confidence interval for the mean number of years the students were out of school before enrolling at the college.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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I'm seeking help on the 2nd two bullet points only please. 

Finding Confidence Intervals For each of the following, calculate the stated confidence interval, explaining all steps in your process. Then write a statement interpreting the confidence interval in context. • A survey of 500 randomly chosen students at a particular college found that 117 of them actively attend student Q&A hours with their professor. Find the 95% confidence interval for the proportion of students at that college who actively attend student Q&A hours. • A survey of 25 randomly chosen students at a particular college found that the mean number of years the students were out of school before enrolling at the college was 7.6 years, with a sample standard deviation of 1.4 years. Find the 99% confidence interval for the mean number of years the students were out of school before enrolling at the college. . For the scenario above with the mean number of years students were out of school before enrolling in college, find the 99% confidence interval for the mean again, but this time with the assumption that the population standard deviation is 2.3 years. am M 31 UY 1 acer C ●
Transcribed Image Text:Finding Confidence Intervals For each of the following, calculate the stated confidence interval, explaining all steps in your process. Then write a statement interpreting the confidence interval in context. • A survey of 500 randomly chosen students at a particular college found that 117 of them actively attend student Q&A hours with their professor. Find the 95% confidence interval for the proportion of students at that college who actively attend student Q&A hours. • A survey of 25 randomly chosen students at a particular college found that the mean number of years the students were out of school before enrolling at the college was 7.6 years, with a sample standard deviation of 1.4 years. Find the 99% confidence interval for the mean number of years the students were out of school before enrolling at the college. . For the scenario above with the mean number of years students were out of school before enrolling in college, find the 99% confidence interval for the mean again, but this time with the assumption that the population standard deviation is 2.3 years. am M 31 UY 1 acer C ●
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