Question 1:

Identify the type I error and the type II error that corresponds to the given hypothesis. The proportion of people who write with their left hand is equal to 0.23. Which of the following is a type I error? 0 A. Fail to reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually 0.23. O B. Reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually 0.23. O C. Reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually different from 0.23. O D. Fail to reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually different from 0.23. Which of the following is a type II error? 0 A. Fail to reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually different from 0.23. O B. Reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually different from 0.23. O C. Fail to reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually 0.23. O D. Reject the claim that the proportion of people who write with their left hand is 0.23 when the proportion is actually 0.23. Use the sample data and confidence level given below to complete parts (a) through (d). A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4982 patients treated with the drug, 179 developed the adverse reaction of nausea. Construct a 95% confidence interval for the proportion of adverse reactions. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E=] (Round to three decimal places as needed.) c) Construct the confidence interval.