Chapter 7 Practice

Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.008; confidence level: 99%; f; and 3 unknown O A) 15,900 0 B) 26,024 0 C) 25,901 0 D) 25,894 Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.03; confidence level: 95%; from a prior study/,1; is estimated by the decimal equivalent of 66%. Q A) 1654 Do one of the following, as appropriate: (a) Find the critical value zu/z, (b) find the critical value tel/2: (c) state that neither the normal nor the t distribution applies. 99%; n = 17; o is unknown; population appears to be normally distributed. 0 A) 2m = 2.567 O B) 2W2 = 2.583 O C) tm = 2.898 O D) tat/2 = 2.921 Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Of 346 items tested, 12 are found to be defective. Construct the 98% confidence interval for the proportion of all such items that are defective. List the calculator steps and type the confidence interval in the form