Question

1: The time it takes a student to complete a test is A. Qualitative B. Quantitative...

1: The time it takes a student to complete a test is

A. Qualitative

B. Quantitative discrete

C. Quantitative continuous

2: The primary purpose of a confidence interval for a mean is (1pt)

A. to estimate the sample mean

B. to test the hypothesis about a sample mean

C. to estimate the population mean

D. to provide an interval that covers 90% of the population

3: Based on a report 10% of US adults claim that they have seen extraterrestrial being. 4 people were randomly selected. For the probability distribution below the standard deviation is

X P(x)
0 0.6561
1 0.2916
2 0.0486
3 0.0036
4 0.0001

A. 0.36

B. 0.40

C. 0.60

D. 0.50

Math   Statistics-And-Probability   
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