Question

your turn

1. research conducted on 250 high school students nationwide found that the average number of hours on instagram per day is 2.

a) identify the population and the sample.
b) what is the parameter of interest? what is the statistic?

1. research conducted on 250 high school students nationwide found that 80% use instagram more than any other social networking site.

a) identify the population and the sample.
b) what is the parameter of interest? what is the statistic?

Explanation:

Step1: Define population and sample

Population is all high - school students nationwide. Sample is 250 high - school students surveyed.

Step2: Define parameter and statistic (for 1)

Parameter: True average hours on Instagram per day for all high - school students. Statistic: Average 2 hours for 250 students.

Step3: Define parameter and statistic (for 2)

Parameter: True proportion using Instagram more than others for all high - school students. Statistic: 80% for 250 students.

Answer:

1. A. Population: All high - school students nationwide. Sample: 250 high - school students.

B. Parameter: True average hours on Instagram per day for all high - school students. Statistic: 2 hours.

1. A. Population: All high - school students nationwide. Sample: 250 high - school students.

B. Parameter: True proportion using Instagram more than others for all high - school students. Statistic: 80%.