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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- A . is defined as the probability that the interval estimate will Include the population parameter of interest, such as the mean or the proportion. a. point estimate O b. Level of significance O c. Margin of error. o d. confidence interval e. confidence levelAs our sample size increases, what happens to our confidence interval? O The interval becomes more precise O The interval becomes less precise O The significance level increases O The significance level decreases O Nothing changesAssume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 257 with 50% 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 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. =
- Determine the minimum sample size required when you want to be 99% confident that the sample mean is within one unit of the population mean and σ=19.5. Assume the population is normally distributed. Question content area bottom Part 1 A 99% confidence level requires a sample size of enter your response here . (Round up to the nearest whole number as needed.)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. =
- Sample 2 10, 15, 22, 1, 12, 1, 5, 12, 5, 6, 6, 1, 1, 25, 8, 10 what is the 95% Confidence interval to 11.69?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
