Question

1. A local restaurant is open 7 days a week. The owner looked at their revenue from a recent week and found that 4% of it came from Monday, 7% came from Tuesday, 7% came from Wednesday, 5% came from Thursday, 27% came from Friday, 33% came from Saturday, and 17% came from Sunday.

What are the expected proportions of revenue for each day of the week, if there is no daily effect on revenue? Match the correct percentage to the appropriate day, answers may be used more than once.

Group of answer choices - Choose a percentage for EACH day of the week

Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday

7%

5%

4%

14.3%

27%

17%

33%

2. What are the assumptions for a Chi Square Test for Homogeneity? Mark all that apply.

Group of answer choices

Expected Cell Count Condition

Independence Assumption

Counted Data Condition

Randomization Condition

Normal Distribution

3. A department store manager wants to determine if current preferences of athletic brands differ from previous preferences. Historically, the preferences of the 4 main athletic brands have been 40% Nike, 30% Adidas, 25% Under Armour, and 5% New Balance. Suppose a random sample of 600 customers was taken.

What is the expected number who prefer Nike?

Round your answer to the nearest whole number.

Answer 1

Answer 1

If there is no daily effect on revenue then expected proportion of  revenue for each day of the week will be equal.

Thus, the percentage for EACH day of the week = 100/7 = 14.3%

Monday = 14.3%

Tuesday = 14.3%

Wednesday = 14.3%

Thursday = 14.3%

Friday = 14.3%

Saturday = 14.3%

Sunday = 14.3%

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