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A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students was x = 13.7 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation o = 7.4 hours in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university. Does the study give good evidence that students claim to study more than 13 hours per week on the average? The National Survey of Student Engagement conducts an annual survey that includes hours spent preparing for class each week. The numbers in this exercise are based on the results of the 2015 survey. You can find survey results at nsse.indiana.edu/html/findings. cfm. What is the value of the test statistic z? Give your answer to two decimal places. Z=

A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students was x = 13.7 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation o = 7.4 hours in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university. Does the study give good evidence that students claim to study more than 13 hours per week on the average? The National Survey of Student Engagement conducts an annual survey that includes hours spent preparing for class each week. The numbers in this exercise are based on the results of the 2015 survey. You can find survey results at nsse.indiana.edu/html/findings. cfm. What is the value of the test statistic z? Give your answer to two decimal places. Z=

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
Section10.6: Summarizing Categorical Data
Problem 30PPS
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O Ma A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students was x = 13.7 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation o = 7.4 hours in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university. Does the study give good evidence that students claim to study more than 13 hours per week on the average? The National Survey of Student Engagement conducts an annual survey that includes hours spent preparing for class each week. The numbers in this exercise are based on the results of the 2015 survey. You can find survey results at nsse.indiana.edu/html/findings. cfm. What is the value of the test statistic z? Give your answer to two decimal places. Z =
Transcribed Image Text:O Ma A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 463 students was x = 13.7 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation o = 7.4 hours in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university. Does the study give good evidence that students claim to study more than 13 hours per week on the average? The National Survey of Student Engagement conducts an annual survey that includes hours spent preparing for class each week. The numbers in this exercise are based on the results of the 2015 survey. You can find survey results at nsse.indiana.edu/html/findings. cfm. What is the value of the test statistic z? Give your answer to two decimal places. Z =
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