A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year, monitoring the progress the students made toward completing a bachelor's degree. One aspect of his research was to determine whether students who first attended community college took longer to attain a bachelor's degree than those who immediately attended and remained at a 4-year institution. The data in the table attached below summarize the results of his study. Complete parts a) through e) below. Click here to view the sample data. Click here to view Student's t-distribution table. Determine the test statistic. t= 12.44 (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal places as needed.) A. The critical value is 2.337. O B. The lower critical value is The upper critical value is Should the hypothesis be rejected? Reject the null hypothesis. The evidence does suggest that community college transfer students take longer to attain a bachelor's degree. d) Construct a 95% confidence interval for pcommunity college - Hno transfer to approximate the mean additional time it takes to complete a bachelor's degree if you begin in community college. The confidence interval is the range from (Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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i sample data
Community
College Transfer
No Transfer
274
1142
Sample mean time to
graduate, in years
Sample standard
5.44
4.51
1.132
1.023
deviation time to
graduate, in years
Transcribed Image Text:i sample data Community College Transfer No Transfer 274 1142 Sample mean time to graduate, in years Sample standard 5.44 4.51 1.132 1.023 deviation time to graduate, in years
A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year, monitoring the progress the students
made toward completing a bachelor's degree. One aspect of his research was to determine whether students who first attended community college took longer to attain
a bachelor's degree than those who immediately attended and remained at a 4-year institution. The data in the table attached below summarize the results of his study.
Complete parts a) through e) below.
Click here to view the sample data.
Click here to view Student's t-distribution table.
Determine the test statistic.
t= 12.44 (Round to two decimal places as needed.)
Determine the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice.
(Round to three decimal places as needed.)
O A. The critical value is 2.337.
O B. The lower critical value is
The upper critical value is
Should the hypothesis be rejected?
Reject
the null hypothesis. The evidence
does
suggest that community college transfer students take longer to attain a bachelor's degree.
d) Construct a 95% confidence interval for ucommunity college - Hno transfer to approximate the mean additional time it takes to complete
bachelor's degree if you
begin in community college.
The confidence interval is the range from to.
(Round to three decimal places as needed.)
Enter your answer in the edit fields and then click Check Answer.
(2
Transcribed Image Text:A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year, monitoring the progress the students made toward completing a bachelor's degree. One aspect of his research was to determine whether students who first attended community college took longer to attain a bachelor's degree than those who immediately attended and remained at a 4-year institution. The data in the table attached below summarize the results of his study. Complete parts a) through e) below. Click here to view the sample data. Click here to view Student's t-distribution table. Determine the test statistic. t= 12.44 (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal places as needed.) O A. The critical value is 2.337. O B. The lower critical value is The upper critical value is Should the hypothesis be rejected? Reject the null hypothesis. The evidence does suggest that community college transfer students take longer to attain a bachelor's degree. d) Construct a 95% confidence interval for ucommunity college - Hno transfer to approximate the mean additional time it takes to complete bachelor's degree if you begin in community college. The confidence interval is the range from to. (Round to three decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. (2
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