MC/True or false practice questions

Question 1

Chloe randomly samples 2000 people at the airport last tuesday for her research on peoples preferred flight times. What type of sample is this?

a. Simple Random Sample

b. Stratified Random Sample

c. Cluster Sample

d. None of the above

Question 2

Which statement is most correct for a pie chart?

a. This is a bar chart in which the frequencies are sorted from smallest to largest

b. It is used to represent the split in a variable that adds to 100%

c. The X-axis typically represents the different categories and the y-axis can capture the frequency or relative frequency.

d. None of the above

Question 3

Which of the following is NOT a type of non-probability sampling?

a. Cluster sampling

b. stratified random sampling

c. quota sampling

d. convenience sampling

Question 4

A histogram with a long right tail is considered right skewed having several large outliers

TRUE or FALSE

Question 5

The sample space represents a subset of possible outcomes

TRUE or FALSE

Question 6

For two events A and B each with probability greater than 0, if they are independent then they are also mutually exclusive

TRUE or FALSE

Question 7 ______

Suppose that P(A) = 0.4, P(B) = 0.3 and P(A U B) = 0.42. Then the P(A|B) is?

a. 0.4

b. 1.93

c. 0.75

d. 1.4

Question 8

What is a p-value? Select the best answer from those below.

a. The probability that the null hypothesis is true.

b. The probability that the alternative hypothesis is true

c. The probability of the observed data, assuming the null is true

d. The probability of the observed data, assuming the alternative hypothesis is true