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ad-work [718]
3 years ago
7

The mean income per person in the United States is $41,500, and the distribution of incomes follows a normal distribution. A ran

dom sample of 10 residents of Wilmington, Delaware, had a mean of $47,500 with a standard deviation of $10,600. At the 0.010 level of significance, is that enough evidence to conclude that residents of Wilmington, Delaware, have more income than the national average?
Business
1 answer:
rewona [7]3 years ago
4 0

Answer:

0.010 level of significance = z value of -2.33

41,500-47,500/(10,600/3.1)= -1.754

Z value is less than -2.33 which means that there is not enough evidence to conclude that residents of wilmington have more income than the national average at significance level of 0.010

Explanation:

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If a company spends $20 million to install new footwear-making equipment with capacity to produce 1 million pairs of athletic fo
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If you need any clarification do react or comment.

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