A randomly selected list of everyday food items was generated. Twenty-eight Grub Savers stores were surveyed as to what the cost of the list of items would cost. The mean and standard deviation is recorded in the table below. Sixty Budget food stores were surveyed in a similar manner. mean amount spent s grub savers $49 $10 budget food $52 $20 Test whether the mean amount spent at Grub Savers is less than the mean amount spent at Budget Food. ? = 0.01
A randomly selected list of everyday food items was generated. Twenty-eight Grub Savers stores were surveyed as to what the cost of the list of items would cost. The mean and standard deviation is recorded in the table below. Sixty Budget food stores were surveyed in a similar manner. mean amount spent s grub savers $49 $10 budget food $52 $20 Test whether the mean amount spent at Grub Savers is less than the mean amount spent at Budget Food. ? = 0.01
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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A randomly selected list of everyday food items was generated. Twenty-eight Grub Savers stores were surveyed as to what the cost of the list of items would cost. The mean and standard deviation is recorded in the table below. Sixty Budget food stores were surveyed in a similar manner.
| mean amount spent | s | |
| grub savers | $49 | $10 |
| budget food | $52 | $20 |
Test whether the mean amount spent at Grub Savers is less than the mean amount spent at Budget Food. ? = 0.01
The table shows the sample statistics for the ACT scores of two rival schools in Slate County.
| school | mean act score | standard deviation | |
| east state h.s. |
20 |
4 | 30 |
| west state h.s. | 23 | 6 | 50 |
Test whether the mean ACT score of East Slate H.S. is different than the mean ACT score of West Slate H.S. with 95% confidence.
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