The mean wage rate for hourly workers at General Motors is [Mu=$14.25] per hour

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The mean wage rate for hourly workers at General Motors is [Mu=$14.25] per hour (Detroit News, April 14, 1989). Assume that the population standard deviation [s=$2.00]. What is the probability that the sample mean [x] is at least $13.80 per hour but not more than $14.50, given arandom sample of [n=50 workers]?

a. 0.0559

b. 0.1894

c. 0.2453

d. 0.9441

e. None of the above answers is correct.

 

  • 8 years ago
The mean wage rate for hourly workers at General Motors is [Mu=$14.25] per hour
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