A manager wishes to estimate a population mean using a 95% confidence interval estimate that has a margin of error of ±48.0. If the population standard deviation is thought to be
670, what is the required sample size?
The sample size must be at least _____________
(Round up to the nearest whole number.)
We need at least 9 more requests to produce the answer.
1 / 10 have requested this problem solution
The more requests, the faster the answer.
8.2.29 Question Help A manager wishes to estimate a population mean using a 95% confidence interval estimate that has a margin of error of +49.0. If the population standard deviation is thought to be 680, what is the required sample size? The sample size must be at least (Round up to the nearest whole number.)
E 8.2.28-T Question Help An advertising company wishes to estimate the mean household income for all single working professionals who own a foreign automobile. If the advertising company wants a 95% confidence interval estimate with a margin of error of 42700, what sample size is needed if the population standard deviation is known to be $29,6007 The sample size must be at least (Round up to the nearest whole number)
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error =$5,standard deviation=$25 The required sample size is ????? (Round up to the nearest whole number as needed.)
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error equals=$66, standard deviation equals=$2222 The required sample size is _____. (Round up to the nearest whole number as needed.)
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of errorequals $3, standard deviationequals $23 The required sample size is nothing . (Round up to the nearest whole number as needed.)
8.1.5 Question Help Determine the 95% confidence interval estimate for the population mean of a normal distribution given n = 100, o = 133, and x = 1,500 The 95% confidence interval for the population mean is from to (Round to two decimal places as needed. Use ascending order.) 8.1.14-T Question Help As a follow-up to a report on gas consumption, a consumer group conducted a study of SUV owners to estimate the mean mileage for their vehicles. A simple...
Consider a population having a standard deviation equal to 9.96. We wish to estimate the mean of this population. (a) How large a random sample is needed to construct a 95% confidence interval for the mean of this population with a margin of error equal to 1? (Round your answer to the next whole number.) The random sample is units. (b) Suppose that we now take a random sample of the size we have determined in part a. If we...
One researcher wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.27 hour is desired. Past studies suggest that a population standard deviation of 1.5 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with the stated accuracy. The required sample size is (Round up to the nearest whole number.)
One researcher wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.29 0.29 hour is desired. Past studies suggest that a population standard deviation of 2.4 2.4 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with the stated accuracy. The required sample size is nothing . (Round up to the nearest whole numbe These are the only numbers I was...
Exercise 9-61 (LO9-2, LO9-4) A survey of 48 randomly selected iPhone owners showed that the purchase price has a mean of $670 with a sample standard deviation of $23. (Use z Distribution Table.) Compute the standard error of the sample mean. (Round your answer to the nearest whole number.) Standard error: Compute the 98% confidence interval for the mean. (Use t Distribution Table.) (Round your answers to 3 decimal places.) The confidence interval is between: ________ and ________ To be...