At what wait time will 98.78% (P = .9878) of all space Mountain wait times be le

Question

At what wait time will 98.78% (P = .9878) of all space Mountain wait times be less than that time (in minutes)? a. 84 minutes b. 72 minutes c. 68 minutes b. 88 minutes e. 90 minutes The one - year postgraduate salary of statistics students is known to have a Normal Distribution. From a sample of 36 statistics students, the average salary was found to be $54,000. It is known that the population standard deviation (sigma) of salaries c statisticians one - year post graduation is $6,000. Calculate a 95% Confidence Interval around the mean. a. ($52, 718, $55, 282) b. ($52, 355, $55, 645) c. ($51, 674, $56, 326 d. ($52, 040, $55, 960) e. ($51, 424, $56, 576)

Explanation / Answer

24) Seems something is missing , but i will let you know how to calc. this:

p = .9878

Z = 2.25 for pvalue of .9878

So, answer should be

Mean + 2.25*Stdev

= Mean + 2.25*Stdev

Please plug in the value of Mean and stdandard deviation to get the answer.

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