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The time spent by business consultants in UAE business sector to complete a consulting related job...

The time spent by business consultants in UAE business sector to complete a consulting related job is normally distributed with a mean of 30 minutes and a standard deviation of 9 minutes. A random sample of times spent by 36 consultants to complete the job is selected.

What is the probability that a randomly selected business consultant will spend exactly 35 minutes to complete the job?

What is the minimum and maximum times of the middle 70% of the time spent to complete the consulting job?

Find the probability that the sample mean time is more than 33 minutes.

Math   Statistics-And-Probability   
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