The number of alcoholic drinks per week is given below for adult men and women who drink. Complete parts (a) through (d) below. Click the icon to view the data for drinks per week of adult men and women. a. Compare the mean number of drinks for men and women. The mean number of drinks for men is (Round to two decimal places as needed.) The mean number of drinks for women is The mean number of drinks for men is than the mean number of drinks for women. b. Compare the standard deviation of the number of drinks of men and of women. The standard deviation of the number of drinks for men is than the standard deviation of the number of drinks for women. (Round to two decimal places as needed.) The standard deviation of the number of drinks for women is ☐. The standard deviation of the number of drinks for man is c. Remove the outliers of 70 and 48 drinks for the men, and compare the means again. What effect did removing the outliers have on the mean? With the outliers removed, the new mean number of drinks for men is of drinks for women. The mean number of drinks for women is The new mean number of drinks for men is than the mean number (Round to two decimal places as needed.) d. What effect do you think removing the two outliers would have on the standard deviation, and why? OA. With two outliers removed, the standard deviation will increase. Each observation will have a greater impact on the standard deviation, so the standard deviation must be greater than or equal to its prior value. OB. With two outliers removed, the standard deviation will increase. Removing two outliers decreases the sample size, which leads to a greater standard deviation. OC. With two outliers removed, the standard deviation will decrease. Since these values are farthest from the mean, their large contribution to the standard deviation would be removed. OD. With two outliers removed, the standard deviation will decrease. Removing two outliers eliminates two addends from the calculation, which necessarily decreases variation. Drinks Per Week For Men and Women Men Women Men Women 48 223 2 6 0 1 16 8 15 9 6 21 10 5 17 4 20 10 3720D4543 8 8 32252 293 ∞ ∞ S 13 14 472342 9 61725 6 10 9 25 1 23 18 1 0 70 11 6 16 9 2 8 2022224235767 1 9 12 9 20 18
The number of alcoholic drinks per week is given below for adult men and women who drink. Complete parts (a) through (d) below. Click the icon to view the data for drinks per week of adult men and women. a. Compare the mean number of drinks for men and women. The mean number of drinks for men is (Round to two decimal places as needed.) The mean number of drinks for women is The mean number of drinks for men is than the mean number of drinks for women. b. Compare the standard deviation of the number of drinks of men and of women. The standard deviation of the number of drinks for men is than the standard deviation of the number of drinks for women. (Round to two decimal places as needed.) The standard deviation of the number of drinks for women is ☐. The standard deviation of the number of drinks for man is c. Remove the outliers of 70 and 48 drinks for the men, and compare the means again. What effect did removing the outliers have on the mean? With the outliers removed, the new mean number of drinks for men is of drinks for women. The mean number of drinks for women is The new mean number of drinks for men is than the mean number (Round to two decimal places as needed.) d. What effect do you think removing the two outliers would have on the standard deviation, and why? OA. With two outliers removed, the standard deviation will increase. Each observation will have a greater impact on the standard deviation, so the standard deviation must be greater than or equal to its prior value. OB. With two outliers removed, the standard deviation will increase. Removing two outliers decreases the sample size, which leads to a greater standard deviation. OC. With two outliers removed, the standard deviation will decrease. Since these values are farthest from the mean, their large contribution to the standard deviation would be removed. OD. With two outliers removed, the standard deviation will decrease. Removing two outliers eliminates two addends from the calculation, which necessarily decreases variation. Drinks Per Week For Men and Women Men Women Men Women 48 223 2 6 0 1 16 8 15 9 6 21 10 5 17 4 20 10 3720D4543 8 8 32252 293 ∞ ∞ S 13 14 472342 9 61725 6 10 9 25 1 23 18 1 0 70 11 6 16 9 2 8 2022224235767 1 9 12 9 20 18
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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3) Part a through d please.
Transcribed Image Text:The number of alcoholic drinks per week is given below for adult men and women who drink. Complete parts (a) through (d) below.
Click the icon to view the data for drinks per week of adult men and women.
a. Compare the mean number of drinks for men and women.
The mean number of drinks for men is
(Round to two decimal places as needed.)
The mean number of drinks for women is
The mean number of drinks for men is
than the mean number of drinks for women.
b. Compare the standard deviation of the number of drinks of men and of women.
The standard deviation of the number of drinks for men is
than the standard deviation of the number of drinks for women.
(Round to two decimal places as needed.)
The standard deviation of the number of drinks for women is ☐. The standard deviation of the number of drinks for man is
c. Remove the outliers of 70 and 48 drinks for the men, and compare the means again. What effect did removing the outliers have on the mean?
With the outliers removed, the new mean number of drinks for men is
of drinks for women.
The mean number of drinks for women is The new mean number of drinks for men is
than the mean number
(Round to two decimal places as needed.)
d. What effect do you think removing the two outliers would have on the standard deviation, and why?
OA. With two outliers removed, the standard deviation will increase. Each observation will have a greater impact on the standard deviation, so the standard deviation must be greater than or
equal to its prior value.
OB. With two outliers removed, the standard deviation will increase. Removing two outliers decreases the sample size, which leads to a greater standard deviation.
OC. With two outliers removed, the standard deviation will decrease. Since these values are farthest from the mean, their large contribution to the standard deviation would be removed.
OD. With two outliers removed, the standard deviation will decrease. Removing two outliers eliminates two addends from the calculation, which necessarily decreases variation.
Transcribed Image Text:Drinks Per Week For Men and Women
Men Women Men
Women
48
223
2
6
0
1
16
8
15
9
6
21
10
5
17
4
20
10
3720D4543
8
8
32252 293 ∞ ∞ S
13
14
472342
9
61725
6
10
9
25
1
23
18
1
0
70
11
6
16
9
2
8
2022224235767
1
9
12
9
20
18
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