4. Statistics
Sampling Estimation — Quiz
Test your understanding of sampling estimation with 5 practice questions.
Practice Questions
Question 1
Which of the following best describes a point estimate in statistics?
Question 2
What is the formula for the standard error of the sample mean when the population standard deviation $\sigma$ is known?
Question 3
A 95% confidence interval for a population mean is constructed from a sample. Which of the following correctly interprets the meaning of this confidence interval?
Question 4
A sample of size 64 is drawn from a population with a known standard deviation of 10. The sample mean is 50. What is the 95% confidence interval for the population mean? (Use $z = 1.96$ for 95% confidence)
Question 5
Which of the following factors will decrease the width of a confidence interval for a population mean, assuming all else remains constant?