Confidence interval become narrow by increasing the O a. Sample size. O b. Level of confidence. O c. Degrees of freedom. o d. Population size
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- Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 330 with 29% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 222 with 120 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to 4 decimal places.C.I. =Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 172 with 32% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =
- Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 331 with 182 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 309 with 71 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =An educator wants to construct a 99% confidence interval for the proportion of elementary school children in Michigan who are proficient in reading. Estimate the sample size needed to conduct this survey and assume that there there is no information available to be used from a previous study. Use a margin of error of 3%. What is the sample size: _________
- Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample size of 201 with 85 percent success rate.Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 119 with 93 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =What is the margin of error for the population mean at 90% confidence level? Wait Time (minutes) 5.1 10.8 6.2 4.3 5.7 7.3 4.7 7.5 8.7 5.5 8.7 7.7 6.5 6.2 11.4 8.1 5.5 12.3 6.4 7.2 7.6 9.2 8.9 6.9 4.8 9.4 11.7 5.6 7.1 13.4
- Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 148 with 65% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 308 with 107 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample of size 99 with 26 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.