Answered step by step
Verified Expert Solution
Question
1 Approved Answer
A polling agency obtains a list of telephone numbers for 100,000 registered voters in a community. From these numbers the agency randomly selects 900 individuals
A polling agency obtains a list of telephone numbers for 100,000 registered voters in a community. From these numbers the agency randomly selects 900 individuals to participate in a brief survey (you may assume for the sake of this question that all contacted individuals respond). One of the questions asked is the respondent's age. A month later, the agency conducts a similar survey, but contacts only 400 individuals. Which statement below is true? Question 8 options: The 95% confidence interval for age will be narrower (more precise) in the first survey than in the second survey, since the sample size was larger for the first survey. The 95% confidence interval for age will be wider (less precise) in the first survey than in the second survey, since the sample size was larger for the first survey. The 95% confidence intervals for age should be the same width for both surveys, since the polling agency is sampling from the same population in both cases. If the polling agency were to construct 95% confidence intervals thousands of times, they would capture the true population mean only about 5% of the time
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started