Mathematics, 30.11.2019 06:31 lyrhiii
Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05 in.
(a) determine the minimum sample size required to construct a 99% confidence interval for the population mean. assume the population standard deviation is 0.20 in.
(b) repeat part (a) using a standard deviation of 0.40 in. which standard deviation requires a larger sample size? explain.
(a) the minimum sample size required to construct a 99% confidence interval using a population standard deviation of 0.20 in. is balls. (round up to the nearest integer.)
(b) the minimum sample size required to construct a 99% confidence interval using a standard deviation of 0.40 in. is balls. (round up to the nearest integer.)
a population standard deviation of in. requires a larger sample size. due to the increased variability in the population, a sample size is needed to ensure the desired accuracy.
Answers: 2
Another question on Mathematics
Mathematics, 21.06.2019 22:20
(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)
Answers: 2
Mathematics, 22.06.2019 00:00
Julia bought 7 hats a week later half of all her hats were destroyed in a fire. there are now only 12 hats left with how many did she start
Answers: 1
Mathematics, 22.06.2019 05:30
Kaitlin is on s long car trip.every time she stops to buy gas,she loses 15 minutes of travel time.if she has to stop 5 times,how late will she be getting to her destination?
Answers: 1
Mathematics, 22.06.2019 05:40
Rob is investigating the effects of font size on the number of words that fit on a page. he changes the font size on an essay and records the number of words on one page of the essay. the table shows his data. which equation represents the approximate line of best fit for data, where x represents font size and y represents the number of words on one page?
Answers: 3
You know the right answer?
Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05 in. <...
Questions
Mathematics, 28.05.2021 15:30
Advanced Placement (AP), 28.05.2021 15:30
Social Studies, 28.05.2021 15:30
English, 28.05.2021 15:30
Computers and Technology, 28.05.2021 15:30
Mathematics, 28.05.2021 15:30
