Question

A recent study reported that high school students spend an average of 94 minutes per day texting. Jenna claims that the average for the students at her large high school is greater than 94 minutes. She will conduct a study to investigate this claim.
(a) To collect data, Jenna will select a sample of size 32 from the population.

(i) State Jenna’s population of interest.

(ii) Name and describe a sampling method Jenna could use that will satisfy the conditions needed for inference to the population.

Answer 1

Jeena would possibly be interested in the students of the high school that she attends, as mentioned in the passage.

The sampling method that she could opt for is:

Random sampling method.

Explanation:

Jeena is going to be collecting data from a minimum of 32 students, as is the minimum number of samples required to conduct an experimental study.

Since her claim is that the students in her high school spend more than 94 minutes per day in texting, she could narrow down the age range that she would want to study to claim her study.

The average age for any high school student is 14 to 18 years; therefore she could narrow it down to:

14-to-16 years or

16-to-18 years.

Such a bifurcation would make her study more focused and easier to calculate the findings on further stages.

Regarding the sampling method, " simple random sampling" would work best that would satisfy the conditions needed for inference to the population. Random sampling is an unconditioned selection of participants within the focused group.

Hence, these could be the steps that she could follow to start her study.