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Ryan, Engineer
Category: Calculus and Above
Satisfied Customers: 9063
Experience:  B.S. in Civil Engineering
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9) Assume the population weekly wage data is normally

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9) Assume the population weekly wage data is normally distributed. The upper end of the 95% interval estimate is: a) $952.9 b) $978.9 c) $999.3 d) $1,011.7 10) In the previous question, to build a 95% interval estimate for the population mean weekly wage
with a margin of error of $20, the minimum sample size is ______. Use a planning value of 250 for the standard deviation. a) 601 b) 580 c) 521 d) 492
Submitted: 2 years ago.
Category: Calculus and Above
Expert:  Ryan replied 2 years ago.
There isn't enough information in your post to answer the first part. What are the mean and standard deviation of the distribution?
The answer for the second part (sample size) is A. 601.