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$6.00 (TCO C) A random sample of 16 Google managers yields the following information on annual salaries. The sample mean is $6

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volcanblack
 
 
Q:
a)(TCO C) A random sample of 16 Google managers yields the following information on annual salaries. The sample mean is $69,000, with a sample standard deviation of $4,000. What is the mean salary of all Google managers? What is the 95% confidence interval for the population mean?

 

(TCO C) A random sample of 16 Google managers yields the following information on annual salaries. The sample mean is $69,000, with a sample standard deviation of $4,000. What is the mean salary of all Google managers? What is the 95% confidence interval for the population mean?

One-Sample T

N

Mean

StDev

SE Mean

95% CI

16

69000

4000

1000

(66869, 71131)

(Points : 20)
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P(X˂15) – P (X˂11) = 0.3581– 0.0146 = 0.3435
34,35%  Percentage of bank account breaks-ins will fall between 11 and 15 minutes 
b) 
P(X>15) = 1-0.3581 = 0.6419 
1000*0.6419 = 641.9
There is not 641.9 accounts in real world so we should expected to take 642 accounts
 

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$6.00
(TCO C) A random sample of 16 Google managers yields the following information on annual salaries. The sample mean is $6
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