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14.-15. The group of students had a test on Statistics. The following student's blood pressure results are given in the table before and after the test: Student 1 2 3 4 5 6 7 8 before 81 83 75 80 81 85 81 76 after 86 84 76 79 82 88 83 80 a) Find 95% confidence interval for the u-difference of the student's blood pressure results before and after the test, b) Do the data support that the blood pressure is increased at the a=0.1? The difference is believed to be approximately normally distributed.

14.-15. The group of students had a test on Statistics. The following student's blood pressure results are given in the table before and after the test: Student 1 2 3 4 5 6 7 8 before 81 83 75 80 81 85 81 76 after 86 84 76 79 82 88 83 80 a) Find 95% confidence interval for the u-difference of the student's blood pressure results before and after the test, b) Do the data support that the blood pressure is increased at the a=0.1? The difference is believed to be approximately normally distributed.

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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14.-15. The group of students had a test on Statistics. The following student's blood pressure results are given in the table before and after the test: Student 1 2 3 4 5 6 7 8 before 81 83 75 80 81 85 81 76 after 86 84 76 79 82 88 83 80 a) Find 95% confidence interval for the difference of the student's blood pressure results before and after the test, b) Do the data support that the blood pressure is increased at the a=0.1? The difference is believed to be approximately normally distributed.
Transcribed Image Text:14.-15. The group of students had a test on Statistics. The following student's blood pressure results are given in the table before and after the test: Student 1 2 3 4 5 6 7 8 before 81 83 75 80 81 85 81 76 after 86 84 76 79 82 88 83 80 a) Find 95% confidence interval for the difference of the student's blood pressure results before and after the test, b) Do the data support that the blood pressure is increased at the a=0.1? The difference is believed to be approximately normally distributed.
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