Consider the following study: Marketing researchers Dominique and Huong wanted t
ID: 3225125 • Letter: C
Question
Consider the following study: Marketing researchers Dominique and Huong wanted to know the following: “What percent of customers wear rain jackets at Seattle Food Store each day?” In an attempt to answer that question, Dominique and Huong designed a study. They called the store manager and arranged to collect data for 20 days. The researchers collected data for 4 hours each day for 20 days and counted the total number of shoppers who did and did not wear a rain jacket. The average number of customers per day who wore a rain jacket during the sample period was 32.
The population in this study was (read each answer and select the best one):
Select one:
a. All shoppers in Seattle.
b. All people who wear rain jackets.
c. All shoppers at the Seattle Food Store.
d. All shoppers at the Seattle Food Store during the study period.
e. The 32 people per day who wore rain jackets to the Seattle Food Store.
The sample in this survey was:
Select one:
a. Dominique and Huong.
b. The people who were observed shopping at the Seattle Food Store during the study.
c. The people who wear rain jackets.
d. The four hours per day that were studied.
e. The 32 people per day who wore rain jackets to the Seattle Food Store.
How would you describe the possibility that the sample was biased (read all answers and select the best one):
Select one:
a. There is no bias because the sample was large.
b. There is no bias because the multiple days were sampled.
c. There could be bias because the selected days might not be representative of all the days (such as changing weather).
d. Not enough information to determine the answer.
Explanation / Answer
1 ) The population in this study was
c ) All shoppers at the Seattle Food Store .
2 ) The sample in this survey was :
b ) The people who were observed shopping at the Seattle Food Store during the study .
3 ) d ) Not enough information to determine the answer .