Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Pinworm: In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 11% of the people in this sample had pinworm
Pinworm: In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 11% of the people in this sample had pinworm but the margin of error for the population estimate was too large. They want an estimate that is in error by no more than 1.5 percentage points at the 90% confidence level. Enter your answers as whole numbers. (a) What is the minimum sample size required to obtain this type of accuracy? Use the prior sample proportion in your calculation. Prior sample info : Pinworm: In a random sample of 810 adults in the U.S.A., it was found that 84 of those had a pinworm infestation. You want to find the 95% confidence interval for the proportion of all U.S. adults with pinworm. (a) What is the point estimate for the proportion of all U.S. adults with pinworm? .104 (b) Construct the 95% confidence interval for the proportion of all U.S. adults with pinworm. Round your answers to 3 decimal places. <.083 p <.125 The minimum sample size is U.S. adults. (b) What is the minimum sample size required to obtain this type of accuracy when you assume no prior knowledge of the sample proportion? The minimum sample size is U.S. adults
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