Mathematics, 27.06.2020 05:01 rydro6019
and's Bend 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 were studied for mail-order sales and internet sales, with the total purchase being recorded for each sale. A random sample of 8 sales receipts for mail-order sales results in a mean sale amount of $81.00 with a standard deviation of $29.75. A random sample of 16 sales receipts for internet sales results in a mean sale amount of $65.00 with a standard deviation of $21.25. Using this data, find the 99% confidence interval for the true mean difference between the mean amount of mail-order purchases and the mean amount of internet purchases. Assume that the population variances are not equal and that the two populations are normally distributed. Step 2 of 3 : Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.
Answers: 1
Mathematics, 21.06.2019 13:30, eelebron0905
Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.
Answers: 1
Mathematics, 21.06.2019 20:00, soniah
Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?
Answers: 1
and's Bend sells a wide variety of outdoor equipment and clothing. The company sells both through ma...
Mathematics, 01.11.2019 19:31
Mathematics, 01.11.2019 19:31
History, 01.11.2019 19:31
English, 01.11.2019 19:31