A small pilot study is conducted to investigate the effect of a nutritional supplement on total body weight. Six participants agree to take the nutritional supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below. Initial Weight Subject Weight after 6 Weeks 155 157 2 142 145 3 176 180 4 180 175 210 209 125 126 Is there a significant increase in body weight following supplementation? Run the test at a 5% level of significance. QUESTION 28 A randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma in children. A total of 250 children are randomized to either the new drug or a placebo (125 per group). The mean age of children assigned to the new drug is 12.4 with a standard deviation of 3.6 years. The mean age of children assigned to the placebo is 13.0 with the placebo group. Is there a statistically significant difference in the proportions of boys assigned to the treatments? Run the appropriate test at a 5% level of significance. standard deviation of 4.0 years. Suppose that there are 63 boys assigned to the new drug group and 58 boys assigned to For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). T T T Arial 3 (12pt) Words:0 Path: p
A small pilot study is conducted to investigate the effect of a nutritional supplement on total body weight. Six participants agree to take the nutritional supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below. Initial Weight Subject Weight after 6 Weeks 155 157 2 142 145 3 176 180 4 180 175 210 209 125 126 Is there a significant increase in body weight following supplementation? Run the test at a 5% level of significance. QUESTION 28 A randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma in children. A total of 250 children are randomized to either the new drug or a placebo (125 per group). The mean age of children assigned to the new drug is 12.4 with a standard deviation of 3.6 years. The mean age of children assigned to the placebo is 13.0 with the placebo group. Is there a statistically significant difference in the proportions of boys assigned to the treatments? Run the appropriate test at a 5% level of significance. standard deviation of 4.0 years. Suppose that there are 63 boys assigned to the new drug group and 58 boys assigned to For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). T T T Arial 3 (12pt) Words:0 Path: p
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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Transcribed Image Text:A small pilot study is conducted to investigate the effect of a nutritional supplement on total body weight. Six participants agree to take the nutritional
supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below.
Initial Weight
Subject
Weight after 6 Weeks
155
157
2
142
145
3
176
180
4
180
175
210
209
125
126
Is there a significant increase in body weight following supplementation? Run the test at a 5% level of significance.
Transcribed Image Text:QUESTION 28
A randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma in children. A total of 250 children are randomized to either the new
drug or a placebo (125 per group). The mean age of children assigned to the new drug is 12.4 with a standard deviation of 3.6 years. The mean age of children
assigned to the placebo is 13.0 with
the placebo group.
Is there a statistically significant difference in the proportions of boys assigned to the treatments? Run the appropriate test at a 5% level of significance.
standard deviation of 4.0 years. Suppose that there are 63 boys assigned to the new drug group and 58 boys assigned to
For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
T T T Arial
3 (12pt)
Words:0
Path: p
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