The random variable X is the crew size of a randomly selected shuttle mission between April 1981 and July 2000 Its probability distribution is as follows a Find and interpret the mean of the random variable b Obtain the standard deviation of the random variable by using one of the formulas given in...

The required calculations are a x xPX x 5777 The average numb ...

The random variable X is the crew size of a randomly selected shuttle mission between April 1981

Question:

The random variable X is the crew size of a randomly selected shuttle mission between April 1981 and July 2000. Its probability is as follows.

a. Find and interpret the mean of the random variable.
b. Obtain the standard deviation of the random variable by using one of the formulas given in Definition 5.10 on page 219.
c. Draw a probability histogram for the random variable; locate the mean; and show one-, two-, and three-standard-deviation intervals.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...