Question

1. a donut shop owner wanted to know how her customers felt about a certain cream - filled donut. she knows she cannot contact all of her customers, so she decides to ask the customers who come in on a monday. there were 115 total customers that day. one of her customers is a statistician, and she says she cannot use this data to make an inference about all her customers. which of the following statements best gives a reason why the statistician would say that? a. the survey was not large enough. b. the sandwich shop owner should have conducted the survey. c. the sample was not random. d. an experiment rather than a survey shouldve been conducted.

Explanation:

To make valid inferences about all customers, a random sample is needed. Selecting only customers on a Monday is a non - random sampling method as it may not represent the entire customer population (e.g., customers who come on other days may have different opinions). The size of the sample is not the main issue here, and the person conducting the survey is not relevant to the sampling problem. Also, a survey is an appropriate method in this case, not an experiment.

Answer:

c. The sample was not random.