Question

1. In a Standard Normal model, what value(s) of z cut(s) off the region described? Dont forget to draw a picture. REGION: The m

2. Police department salaries in San Francisco have a mean of $90,702 and an sd of $45,321. A chief of polices salary has a z-s

3. Police department salaries in San Francisco have a mean of $90,702 and an sd of $45,321. Last year, a police officers salary

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Answer #1

♡ Middle 90% 0.90 0.05 0.05 Plzsa)=0.05 Now by Z-table- Plz > 1.645) - 0.05 so [a= 1.645] So 90% value lies between 1.6452 242 police department sallaries have mean = $90,702 & standard deviation = $45,32, Given - score is 4.84 M = 4.84) 1 X 4 = 4.84have mean = $90,702 Police department salaries & variance - $4532) Given 7. score is zero- X= 45321 xo + 90702 x= 907027 to

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