Researchers conducting a study of the effectiveness of Tamiflu for reducing the duration of flu symptoms recruited 50 subjects who agreed to report to the researchers' lab within 24 hours of getting flu symptoms. Half of the subjects were randomly assigned to take a full dosage of Tamiflu and the other half received a placebo. The time (in hours) to alleviation of all flu symptoms for the two groups are compared in the back-to-back stemplot below. Tamiflu 8 5 5 6 9 5 5 2007 8 8 650 00 8 5530 Placebo 0557 9 0 0 2 6 689 3 0 10 0 4 4 5 7 0 11 0 2 2 5 12 09 2 13 5 8 14 8 15 6 Key: 1516 156 hours Which of the following statements is true about the shapes of the distributions of recovery times? (A) The distributions of recovery times for the Tamiflu and placebo groups are both symmetric. (B) The distributions of recovery times for the Tamiflu and placebo groups are both skewed to the left. (C) The distributions of recovery times for the Tamiflu and placebo groups are both skewed to the right. (D) The distribution of recovery times for the Tamiflu group is skewed to the left, and the distribution of recovery times for the placebo group is skewed to the right. (E) The distribution of recovery times for the Tamiflu group is skewed to the right, and the distribution of recovery times for the placebo group is skewed to the left.
Researchers conducting a study of the effectiveness of Tamiflu for reducing the duration of flu symptoms recruited 50 subjects who agreed to report to the researchers' lab within 24 hours of getting flu symptoms. Half of the subjects were randomly assigned to take a full dosage of Tamiflu and the other half received a placebo. The time (in hours) to alleviation of all flu symptoms for the two groups are compared in the back-to-back stemplot below. Tamiflu 8 5 5 6 9 5 5 2007 8 8 650 00 8 5530 Placebo 0557 9 0 0 2 6 689 3 0 10 0 4 4 5 7 0 11 0 2 2 5 12 09 2 13 5 8 14 8 15 6 Key: 1516 156 hours Which of the following statements is true about the shapes of the distributions of recovery times? (A) The distributions of recovery times for the Tamiflu and placebo groups are both symmetric. (B) The distributions of recovery times for the Tamiflu and placebo groups are both skewed to the left. (C) The distributions of recovery times for the Tamiflu and placebo groups are both skewed to the right. (D) The distribution of recovery times for the Tamiflu group is skewed to the left, and the distribution of recovery times for the placebo group is skewed to the right. (E) The distribution of recovery times for the Tamiflu group is skewed to the right, and the distribution of recovery times for the placebo group is skewed to the left.
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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Question
Transcribed Image Text:Researchers conducting a study of the effectiveness of Tamiflu for reducing the duration of flu
symptoms recruited 50 subjects who agreed to report to the researchers' lab within 24 hours of
getting flu symptoms. Half of the subjects were randomly assigned to take a full dosage of Tamiflu
and the other half received a placebo. The time (in hours) to alleviation of all flu symptoms for the
two groups are compared in the back-to-back stemplot below.
Tamiflu
8 5 5 6
9 5 5 2007
8 8 650 00 8
5530
Placebo
0557
9
0 0 2 6
689
3 0 10
0
4 4 5 7
0 11
0 2 2
5
12 09
2
13 5 8
14 8
15
6
Key: 1516 156 hours
Which of the following statements is true about the shapes of the distributions of recovery times?
(A) The distributions of recovery times for the Tamiflu and placebo groups are both symmetric.
(B) The distributions of recovery times for the Tamiflu and placebo groups are both skewed to the left.
(C) The distributions of recovery times for the Tamiflu and placebo groups are both skewed to the right.
(D) The distribution of recovery times for the Tamiflu group is skewed to the left, and the
distribution of recovery times for the placebo group is skewed to the right.
(E) The distribution of recovery times for the Tamiflu group is skewed to the right, and the
distribution of recovery times for the placebo group is skewed to the left.
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