Question

a recent telephone poll of 999 randomly selected women revealed that 9 in 10 women believe there has been progress in finding a cure for cancer in the last 27 years. describe the population, sample, population parameters, and sample statistics

identify the sample for the given problem. choose the correct answer below.
a. 9 out of 10 women in the country
b. the 999 women selected
c. all women in the country
d. 9 out of 10 of the 999 women selected

identify the population parameter in the given study. choose the correct answer below.
a. the total number of all women in the country
b. the number of women selected
c. the percentage of the 999 women selected who believe there has been progress
d. the percentage of all women in the country who believe there has been progress

Explanation:

Identify the population

Using the Statistical Population knowledge point

$$ \text{Population} = \text{All women in the country} $$

Identify the sample

Using the Sample vs Population knowledge point

$$ \text{Sample} = \text{The 999 women selected} $$

Define population parameter

A population parameter is a numerical characteristic of the entire population. Here, it is the true percentage of all women in the country who believe there has been progress.

Evaluate parameter options

• Option A represents a population size, not the parameter of interest.
• Option B represents the sample size.
• Option C represents the sample statistic (the percentage from the sample).
• Option D represents the true population parameter.

Select correct parameter option

The correct option is D: The percentage of all women in the country who believe there has been progress.

Answer:

Question 1

• B. 9 out of 10 of the 999 women selected
• C. 9 out of 10 women in the country
• D. All women in the country (Correct answer)

Question 2

• A. 9 out of 10 women in the country
• B. The 999 women selected (Correct answer)
• C. All women in the country
• D. 9 out of 10 of the 999 women selected

Question 3

• A. The total number of all women in the country
• B. The number of women selected
• C. The percentage of the 999 women selected who believe there has been progress
• D. The percentage of all women in the country who believe there has been progress (Correct answer)