Posted by **Kim5** on Saturday, June 15, 2013 at 9:28pm.

The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.)

x 10 11 12 13 14

P(x) 0.38 0.1 0.07 0.12 0.33

(a) Find the mean of the number of ships that arrive at a harbor on a given day.

(b) Find the standard deviation, ó, of the number of ships that arrive at a harbor on a given day.

**Answer this Question**

**Related Questions**

- Statistics - The number of ships to arrive at a harbor on any given day is a ...
- Math check - The number of ships to arrive at a harbor on any given day is a ...
- stats - Question Part Points Submissions Used The number of ships to arrive at ...
- Statistics/probability - The random variable X has a binomial distribution with ...
- bus stats - A manufacturing company has 5 identical machines that produce nails...
- statistics - two dices are tossed once. let the random variable be t he sum of ...
- bus stats - John parks cars at a hotel. On the average, 6.0 cars will arrive in ...
- statistics - All deal with a random variable X that follows a normal probability...
- statistics - All deal with a random variable X that follows a normal probability...
- Probability - Manhole explosions (usually caused by gas leaks and sparks) are on...