Question

A national random sample of 20 ACT scores from 2010 is
listed below. Calculate the sample mean and standard deviation. 32,
26, 13, 23, 23, 25, 18, 22, 17, 19, 15, 26, 30, 30, 18, 20, 17, 26,
17, 18

1- O 20.85, 5.94

2-20.50, 5.94

3- none of the above

4- 20.50, 5.79

Answer #1

A random sample of marks scored by 20 students in a CAT is
listed below. Calculate the sample mean and standard deviation:
29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14,
12, 26, 17, 18
Select one:
a. 20.50, 5.94
b. 20.50, 5.79
c. 20.85, 5.94
d. 20.85, 5.79

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