1. A scholar wants to find out whether the average weight of a group of teenage

is below 100. The scholar measured the weight of a random sample of 38 teenage on a

continuous scale. The mean weight in this sample is 89 with variance equal to 144. What is the

appropriate analysis?

to. chi-square

b. related measures t-test

c. single sample t-test

d. independent measures t-test

2. The Etsy owner of the store wants to know if online advertising really does affect sales.

For the experiment, the owner randomly selects 15 items in his Etsy store and records how much of each item was sold in a one-week period. Then, without changing price on

these same 15 items, the owner purchased an Etsy advertising service for these items.

Again the owner records how much of each of these 15 items was sold in a one-week period.

What is the appropriate analysis?

a. independent measures t-test

b. related measures t-test

c. single sample t-test

d. z-test

A scholar is interested in whether there really is a prevailing view that internet brings good for the public. A random sample of 80 individuals were asked the question, "Do you believe the internet brings good for the public?" Forty-four of the respondents circled "yes" on the

questionnaire and thirty-six circled "no." What is the appropriate analysis?

a. chi-square goodness of fit

b. ANOVA

c. z-test

d. regression analysis