# Hello Desperately Looking For The Right Way To Do These Thank You The Completion

Hello! desperately looking for the right way to do these! Thank you!

1. The completion times for a job task range from 11 minutes to 18.7 minutes and are thought to be uniformly distributed.

What is the probability that it will require between 13.2 and 17.4 minutes to perform the tas

2. Suppose the variable x is represented by a standard normal distribution.

What is the probability of x > -0.7?

3. Suppose the variable x is represented by a standard normal distribution.

What value of x is at the 40th percentile of the distribution? Equivalently, what is the value for which there is a probability of 0.40 that x will be less than that value?

4. Major league baseball game durations are normally distributed with a mean of 170 minutes and a standard deviation of 20 minutes.

What is the probability of a game duration of fewer than 200 minutes?

5. Suppose the daily customer volume at a call center has a normal distribution with mean 4,400 and standard deviation 800.

What is the probability that the call center will get more than 3,700 calls in a day?

6. The sales department has determined that the average purchase value for their catalog business is normally distributed with a mean of \$47.62 and a standard deviation of \$9.02.

What is the purchase value at the 40th percentile?

7. The duration of shoppers’ time in BrowseWorld’s new retail outlets is normally distributed with a mean of 33.1 minutes and a standard deviation of 7.6 minutes.

How long must a visit be to put a shopper in the longest 10 percent?