1) A restaurant is planning its staffing for weekday dinners

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1) A restaurant is planning its staffing for weekday dinners. It finds that the number of customers is normally distributed. Which calculation would help them determine the probability of an unusual number of customers arriving for that meal?

Group of answer choices

a. Regression with number of customers as the dependent variable

b. Regression with number of customers as an independent variable

c. Use a confidence interval with the number of customers as the mean

d. Hypothesis testing with a null hypothesis that the number of customers is less than or equal to the usual number

e. Hypothesis testing with a null hypothesis that the number of customers is more than the usual number

 

2)  Quality is important when making cleaning products. The quality control department wants to test throughout each production day. Which sampling method would most likely achieve this objective?

Group of answer choices

a. Selecting the products made for the most important clients

b. Taking a random sample each morning

c. Selecting products made from the first production line

d. Using a convenience sampling process during production

e. Using a systematic sampling process during production