the heights of the bookcases in a school library
A) continuous B) discrete
Q. 2the number of bottles of juice sold in a cafeteria during lunch
A) discrete B) continuous
Q. 3Define probability sampling. Identify some advantages of probability sampling.
What will be an ideal response?
Q. 4A researcher wants to perform a hypothesis test to determine whether the mean length of marriages in California differs from the mean length of marriages in Texas.
A) Two tailed B) Left tailed C) Right tailed
Q. 5Define simple random sampling. Explain why this is important in design of experiments.
What will be an ideal response?
Q. 6True or false? In simple random sampling, each possible sample is equally likely to be the one obtained.
A) True B) False
Q. 7A researcher is interested in determining whether men who have completed a postgraduate degree (master's or Phd) have greater earning potential than those who have completed a Bachelor's degree only.
She will perform a hypothesis test to determine whether the mean salary of men who have completed a postgraduate degree is greater than the mean salary of men with a Bachelor's degree only. Identify the two populations for the proposed hypothesis test.
A) Adults with a Bachelor's degree only and adults who have completed a postgraduate degree
B) Men with a high salary and men with a low salary
C) Salaries of men with a Bachelor's degree only and salaries of men who have completed a postgraduate degree
D) Men with a Bachelor's degree only and men who have completed a postgraduate degree
Q. 8A researcher wants to use a paired sample to determine whether the mean number of hours spent exercising per week for married men differs from the mean number of hours spent exercising per week for married women.
Identify the variable for the proposed hypothesis test.
A) Gender
B) Difference between mean hours of exercise per week for married men and mean hours of exercise per week for married women
C) Marital status
D) Hours of exercise per week
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