Question

There are 600 students at joelle's school. to determine the number of minutes a typical student at her school spends on homework each night, joelle decided to survey a sample of students. she gathered the following data from the 30 members of her soccer team. 90 60 80 110 85 40 80 110 45 60 75 170 65 100 75 130 120 20 50 120 50 60 120 125 can joelle use her data to predict the number of minutes a typical student at her school spends on homework each night? why or why not?

a. no. by choosing to only survey 30 people, she used a sample size that is not a large enough percentage of the student population.
b. yes. she can assume that a typical student at her school spends approximately 85 minutes per night on homework.
c. yes. she can assume that a typical student at her school spends approximately 68 minutes per night on homework.
d. no. by choosing to only survey members of her soccer team, she used a sample that is not representative of the whole student body at her school.

Answer 1

Joelle cannot use her data to predict the number of minutes a typical student at her school spends on homework each night because her sample is not representative of the whole student body.

Step-by-step explanation:

In order to determine if Joelle can use her data to predict the number of minutes a typical student at her school spends on homework each night, we need to consider the characteristics of her data collection process. Joelle surveyed only 30 members of her soccer team, which is not a representative sample of the whole student body at her school. In addition, the sample size of 30 is relatively small compared to the total number of students at her school, which is 600. Therefore, the correct answer is d. No. By choosing to only survey members of her soccer team, she used a sample that is not representative of the whole student body at her school.