A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's . The research firm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 100 of each chain's stores. The stores for each chain are randomly selected, and all purchases are made durin a single week. It is reasonable to assume that the samples are independent. We are unwilling to assume that the population variances are equal. Weeky Expenses Publi's Average Weekly Expenses of the 100stores $120.92 Sample Variance $44.61 Wally's Average Weekly Expenses of the 100 stores $116.89 Sample Variance $64.32 At 95% confidence what is the margin of error (absolute value) If needed round your intermediate calculations to no more than 3 decimal places. Round your final answer to 3 decimal places.

A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's . The research firm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 100 of each chain's stores. The stores for each chain are randomly selected, and all purchases are made durin a single week. It is reasonable to assume that the samples are independent. We are unwilling to assume that the population variances are equal. Weeky Expenses Publi's Average Weekly Expenses of the 100stores $120.92 Sample Variance $44.61 Wally's Average Weekly Expenses of the 100 stores $116.89 Sample Variance $64.32 At 95% confidence what is the margin of error (absolute value) If needed round your intermediate calculations to no more than 3 decimal places. Round your final answer to 3 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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Question

A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's .
The research firm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 100 of
each chain's stores. The stores for each chain are randomly selected, and all purchases are made durin a single
week. It is reasonable to assume that the samples are independent. We are unwilling to assume that the
population variances are equal.
Weeky Expenses
Publi's
Average Weekly Expenses of the 100stores
$120.92
Sample Variance
$44.61
Wally's
Average Weekly Expenses of the 100 stores
$116.89
Sample Variance
$64.32
At 95% confidence what is the margin of error (absolute value)
If needed round your intermediate calculations to no more than 3 decimal places.
Round your final answer to 3 decimal places.

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