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Independent sample of 40 male patients and 35 female patients gave the following data on length of stays in days in the hospital. Assume that o, = 7.5 days and oz = 6.8 days Male Female 4 4 12 18 9 14 7 15 12 6 12 10 3 6 1 3 7 21 4 15 7 3 55 1 4 4 3 2 10 13 5 7 5 18 12 1 23 9 2 7 7 2 15 4 17 2 24 11 14 10 7 3 6 2 1 8 1 5 6 2 14 3 19 3 1 13 a) Ata = 0.20, do the data provide sufficient evidence to conclude that, on the average, males stay in the hospital longer than female? b) Find the 97% confidence interval of the difference in means.

Independent sample of 40 male patients and 35 female patients gave the following data on length of stays in days in the hospital. Assume that o, = 7.5 days and oz = 6.8 days Male Female 4 4 12 18 9 14 7 15 12 6 12 10 3 6 1 3 7 21 4 15 7 3 55 1 4 4 3 2 10 13 5 7 5 18 12 1 23 9 2 7 7 2 15 4 17 2 24 11 14 10 7 3 6 2 1 8 1 5 6 2 14 3 19 3 1 13 a) Ata = 0.20, do the data provide sufficient evidence to conclude that, on the average, males stay in the hospital longer than female? b) Find the 97% confidence interval of the difference in means.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Independent sample of 40 male patients and 35 female patients gave the following data on length of stays in days in the hospital. Assume that o = 7.5 days and o2 6.8 days Male Female 4 4 12 18 9 14 7 15 1 12 6 12 10 3 6 1 3 7 21 4 15 7 3 55 1 1 5 4 4 3 2 10 13 5 7 5 18 12 1 1 23 9. 2 1 7 7 2 15 4 17 24 11 14 10 7 3 2 1 8 1 5 9 6 14 3 19 3 13 a) Ata = 0.20, do the data provide sufficient evidence to conclude that, on the average, males stay in the hospital longer than female? b) Find the 97% confidence interval of the difference in means. 2.
Transcribed Image Text:Independent sample of 40 male patients and 35 female patients gave the following data on length of stays in days in the hospital. Assume that o = 7.5 days and o2 6.8 days Male Female 4 4 12 18 9 14 7 15 1 12 6 12 10 3 6 1 3 7 21 4 15 7 3 55 1 1 5 4 4 3 2 10 13 5 7 5 18 12 1 1 23 9. 2 1 7 7 2 15 4 17 24 11 14 10 7 3 2 1 8 1 5 9 6 14 3 19 3 13 a) Ata = 0.20, do the data provide sufficient evidence to conclude that, on the average, males stay in the hospital longer than female? b) Find the 97% confidence interval of the difference in means. 2.
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