Mathematics, 18.12.2019 02:31, 05leslun42715
The mean income per person in the united states is $50,000, and the distribution of incomes follows a normal distribution. a random sample of 10 residents of wilmington, delaware, had a mean of $60,000 with a standard deviation of $10,000. at the 0.05 level of significance, is that enough evidence to conclude that residents of wilmington, delaware, have more income than the national average?
a. state the null hypothesis and the alternate hypothesis. b. state the decision rule for 0.05 significance level. reject h0 if t > . compute the value of the test statistic. d. is there enough evidence to substantiate that residents of wilmington, delaware, have more income than the national average at the 0.05 significance level?
Answers: 3
Mathematics, 21.06.2019 23:40, aureliafung2p7cxoo
Mikes car gets an average of 28 mpg. there are 12 gallons of fuel in mikes car when he starts his trip of 140 miles. about how many gallons are left at the end of his trip?
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Mathematics, 22.06.2019 01:30, Laners0219
Which represents the number of times all outcomes less than a given outcome occur? cumulative frequency relative frequency frequency cumulative relative frequency
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The mean income per person in the united states is $50,000, and the distribution of incomes follows...
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