need help on statistics please The Kamp family has twins, Rob and Rachel. Both R
ID: 3047845 • Letter: N
Question
need help on statistics please
The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2 years ago. 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 (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 (per year) a. If Rachel has a z-score of 1.5 for her income, how much money is she making (per year)? b. If Rob has a z-score of -1.5 for his income, how much money is he making (per year)?Explanation / Answer
a) Money she is making = 1.5*8000+35000 = $47000
b) Money he is making = -1.5*5000+60000 = $52500
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