Step 1 of 3: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Round your answer to three decimal placesStep 2 of 3: Find the Margin of Error. Round your answer to six decimal placesStep 3 of 3: Calculate the 98% confidence interval. Round your answer to six decimal places K.Brew sells a wide variety of outdoor equipment and clothing. The company sells both through mail order and via the internet. Random samples of sales receipts werestudied for mail-order sales and internet sales, with the total purchase being recorded for each sale. A random sample of 17 sales receipts for mail-order sales results ina mean sale amount of $84.00 with a standard deviation of $15.25. A random sample of 7 sales receipts for internet sales results in a mean sale amount of $90.30with a standard deviation of $16.25. Using this data, find the 98 % confidence interval for the true mean difference between the mean amount of mail-orderpurchases and the mean amount of internet purchases. Assume that the population variances are not equal and that the two populations are normally distributed.

We have given that Sample sizes n1=17 , n2=7 Sample means X̄1=84.00 , X̄2=90.30 s1=…

Step 1 of 3: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Round your answer to three decimal places Step 2 of 3: Find the Margin of Error. Round your answer to six decimal places Step 3 of 3: Calculate the 98% confidence interval. Round your answer to six decimal places

Step 1 of 3: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Round your answer to three decimal places Step 2 of 3: Find the Margin of Error. Round your answer to six decimal places Step 3 of 3: Calculate the 98% confidence interval. Round your answer to six decimal places

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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