For questions 9-13, the duration of time from first exposure to HIV infection to AIDS diagnosis is called the incubation period. The incubation period of a random sample of 9 people living with HIV is given below (in years):
12.0 9.5 13.5 7.2 10.5 6.3 12.5 4.3 6.9
Select your answers from the following list:
a. 9.5
b. 29.0
c. 9.2
d. 843.7
e. 3.18
f. 1768.0
g. 27.4
h. 32.3
i. 196.4
Q 9
Question 9
Calculate the mean (0.5 points)
Select one:
a. 9.5
b. 29.0
c. 9.2
d. 843.7
e. 3.18
f. 1768.0
g. 27.4
h. 32.3
i. 196.4
Q 10
Question 10
Calculate the standard deviation (1 point)
Select one:
a. 9.5
b. 29.0
c. 9.2
d. 843.7
e. 3.18
f. 1768.0
g. 27.4
h. 32.3
i. 196.4
Q 11
Question 11
Calculate the median (0.5 points)
Select one:
a. 9.5
b. 29.0
c. 9.2
d. 843.7
e. 3.18
f. 1768.0
g. 27.4
h. 32.3
i. 196.4
Q 12
Question 12
If the observation "6.3" above was changed to "1.5", what would have to the sample mean? (0.5 points)
Select one:
a. Increase
b. Decrease
c. Remains the same
Q 13
Question 13
If the observation "6.3" above was changed to "1.5", what would have to the sample median? (0.5 points)
Select one:
a. Increase
b. Decrease
c. Remains the same
Q 14
Question 14
If the observation "6.3" above was changed to "1.5", what would have to the sample deviation? (0.5 points)
Select one:
a. Increase
b. Decrease
c. Remains the same
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