Question

complete problems for independent practice. when you are finished, check the solutions with your teacher. 1. a recent survey of 150 high school students in north america showed that 80% reported going on the internet at least once daily. a. identify the population and the sample. b. what is the parameter of interest? what is the statistic? 2. a recent survey of 500 nine - year olds in the united states showed that 42% have played the video game call of duty at least once. 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 in North America; sample is 150 surveyed high - school students.

Step2: Identify parameter and statistic

Parameter is proportion of all North American high - school students going on Internet daily; statistic is 80% from 150 students.

Step3: Repeat for second survey

Population is all nine - year - olds in US; sample is 500 surveyed nine - year - olds. Parameter is proportion of all US nine - year - olds who played Call of Duty; statistic is 42% from 500 students.

Answer:

1a. Population: All high - school students in North America; Sample: 150 surveyed high - school students
1b. Parameter: Proportion of all North American high - school students going on Internet daily; Statistic: 80%
2a. Population: All nine - year - olds in US; Sample: 500 surveyed nine - year - olds
2b. Parameter: Proportion of all US nine - year - olds who played Call of Duty; Statistic: 42%