Question 1

You want to determine whether the proportion of Memphians who prefer Central BBQ over Tops BBQ is greater than 50%. You survey 300 individuals in Memphis. You should use a ____________ to determine this.

Group of answer choices

one-sample Z test

Fisher's exact test

Chi-square test

independent samples T test

Question 2

You wish to determine whether the approval rating (percent of voters who approve) of a proposal changes after an expensive public ad campaign. You therefore survey a sample of voters both before and after the ad campaign. To analyze your data, you would use a ________.

Group of answer choices

McNemar test

Chi-square test

Paired T test

independent samples T test

Question 3

You run a one-way ANOVA on data collected from 10 independent groups, finding an omnibus p-value of p=0.032. Based on a Bonferroni correction, what should your significance threshold be if you wish to perform all pairwise between-group comparisons (rounded to 4 decimal places)?

Group of answer choices

0.0011

0.0007

0.0050

0.0032

Question 4

An ice cream shop proprietor notes a relationship between the hours per day of sunshine and the amount of ice cream she sells. A regression equation for this relationship is I = 1.518*S + 0.305, where "I" is the number of ice cream sales and "S" is the hours of sunshine per day. On a day with 5 hours of sunshine, how many ice creams can she expect to sell? Round to the nearest whole integer (no decimal).

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Question 5

An ice cream shop proprietor notes a relationship between the hours per day of sunshine and the amount of ice cream she sells. A regression equation for this relationship is I = 1.518*S + 0.305, where "I" is the number of ice cream sales and "S" is the hours of sunshine per day. If there is 2 fewer hours of sunshine today compared to yesterday, about how many fewer ice creams should she expect to sell today? Round to the nearest whole integer (no decimal).

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