16. [-/1 Points] DETAILS MENDSTATC4 8.TB.001. MY NOTES ASK YOUR TEACHER Which of the following best describes an unbiased estimator? any sample statistic used to approximate a population parameter any estimator whose standard error is relatively small a sample statistic whose value is usually less than the value of the population parameter a sample statistic that has an expected value equal to the value of the population parameter Need Help? Read It 17. [-/1 Points] DETAILS MENDSTATC4 8. TB.002. MY NOTES ASK YOUR TEACHER Which of these options is the best definition of a point estimate? O It is the average of the population values. It is a single value that is the best estimate of an unknown population parameter. It is the average of the sample values. It is a single value that is the best estimate of an unknown sample statistic. Need Help? Read It 18. [-/1 Points] DETAILS MENDSTATC4 8. TB.013. MY NOTES ASK YOUR TEACHER A 99% confidence interval estimate for a population mean / is determined to be 85.58 to 96.62. If the confidence level is reduced to 90%, what happens to the confidence interval for u? O It becomes narrower. It remains the same. It becomes wider. Need Help? Read It 19. [-/1 Points] DETAILS MENDSTATC4 8. TB.016. MY NOTES ASK YOUR TEACHER After constructing a confidence interval estimate for a population mean, you believe that the interval is useless because it is too wide. In order to correct this problem, what should you do? increase the sample mean O increase the population size increase the sample size increase the confidence coefficient Need Help? Read It 20. [-/1 Points] DETAILS MENDSTATC4 9.TB.012. MY NOTES ASK YOUR TEACHER Consider testing the hypothesis Ho: M = 100 vs. Ha: u # 100. If the value of the test statistic is equal to 1.36, then what is the p-value? O 0.2066 O 0.1738 O 0.4131 O 0.9131