Question

You are comparing the average price of gasoline in 10 different US cities. You sample gas prices in each city. To see if there is at least one city that has different average prices, you would use

Group of answer choices

one sample t test

independent sample t test

dependent (matched) sample t test

simple independent sample ANOVA

dependent (matched) sample ANOVA

factorial ANOVA

2.

You want to see if there is any difference in how many students would vote for each of the five current contenders for a particular student body office. You find out how many students among the 1000 surveyed would choose each candidate. To answer the question, you would use

Group of answer choices

simple(independent sample) ANOVA

one sample t test

Chi square goodness of fit

chi square test of independence

Z test of a proportion

factorial ANOVA

Answer 1

You are comparing the average price of gasoline in 10 different US cities. You sample gas prices in each city. To see if there is at least one city that has different average prices, you would use

The sample of 10 different US cities to be compared in order to obtain the result based on equality of means,

hence we will use

simple independent sample ANOVA

You want to see if there is any difference in how many students would vote for each of the five current contenders for a particular student body office. You find out how many students among the 1000 surveyed would choose each candidate. To answer the question, you would use

Here, we need to check if the actual proportions are comparable with the expected proportions we will use,

Chi square goodness of fit