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The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2...

The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2 years ago, and each is now earning $50,000 per year. Rob is an engineer. The mean salary for engineers with less than 5 years’ experience is $60,000 with a standard deviation of $5,000. Rachel works in the retail industry, where the mean salary for executives with less than 5 years’ experience is $35,000 with a standard deviation of $8,000.

  1. Compute the z values for both Rob and Rachel. (Round your answers to 2 decimal places. Negative amount should be indicated by a minus sign.)

2)Comment on your findings.

Adjusting for their industries, Rob is well average and Rachel well .
math   Statistics-And-Probability   
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Answer #1

We are given that , for Rob mean = 60000 and standard deviation = 5000

and for Rachel mean = 35000 and standard deviation = 8000

Using z-score formula as

z-score for Rob

z-score for Rachel

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