Assuming that the population is normally distributed, construct a 95% confidence interval for the population mean, based

[answerhappygod]

Assuming That The Population Is Normally Distributed Construct A 95 Confidence Interval For The Population Mean Based 1 (412.6 KiB) Viewed 55 times

Assuming that the population is normally distributed, construct a 95% confidence interval for the population mean, based on the following sample size of n = 7. 1, 2, 3, 4, 5, 6, and 24 In the given data, replace the value 24 with 7 and recalculate the confidence interval. Using these results, describe the effect of an outlier (that is, an extreme value) on the confidence interval, in general. Find a 95% confidence interval for the population mean, using the formula or technology. Sμ≤ (Round to two decimal places as needed.) The following data are the amounts that a sample of 15 customers spent for lunch (S) at a fast-food restaurant. Complete parts (a) through (d) below. 7.48 6.32 5.80 6.54 8.30 9.51 7.07 6.81 5.95 4.87 6.52 5.52 7.93 8.30 9.66 a. Construct a 95% confidence interval estimate for the population mean amount spent for lunch ($) at a fast-food restaurant. 6.32 sus 7.89 (Round to two decimal places as needed. Do not include the $ symbol in your answer.) b. Interpret the interval constructed in (a). Choose the correct answer below. OA. The mean amounts in dollars spent for lunch at the fast-food restaurant of 95% of all samples of the same size are contained in the interval. OB. Conclude with 95% confidence that the mean amount in dollars spent for lunch at the fast-food restaurant for the sample is contained in the interval. C. Conclude with 95% confidence that the population mean amount in dollars spent for lunch at the fast-food restaurant is contained in the interval. OD. 95% of the sample data fall between the limits of this confidence interval. c. What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)? OA. The population distribution is uniformly distributed. OB. The population distribution is skewed right. c. The population distribution is normally distributed. OD. The population distribution is skewed left. d. Do you think that the assumption needed in order to construct the confidence interval estimate in (a) is valid? Explain. for n= since The assumption is