# Question

Find the mean and standard deviation for each of the following probability distributions.

a.

x P(x)

3.... .09

4.... .21

5.... .34

6.... .23

7.... .13

b.

x P(x)

0.... .43

1.... .31

2.... .17

3.... .09

a.

x P(x)

3.... .09

4.... .21

5.... .34

6.... .23

7.... .13

b.

x P(x)

0.... .43

1.... .31

2.... .17

3.... .09

## Answer to relevant Questions

Let x be the number of errors that appear on a randomly selected page of a book. The following table lists the probability distribution of x. Find the mean and standard deviation of x. Indicate which of the following random variables are discrete and which are continuous. a. The amount of rainfall in a city during a specific month b. The number of students on a waitlist to register for a class c. The price ...An instant lottery ticket costs $2. Out of a total of 10,000 tickets printed for this lottery, 1000 tickets contain a prize of $5 each, 100 tickets have a prize of $10 each, 5 tickets have a prize of $1000 each, and 1 ticket ...Let x be a discrete random variable that possesses a binomial distribution. Using the binomial formula, find the following probabilities. a. P(x = 0) for n = 5 and p = .05 b. P(x = 4) for n = 7 and p = .90 c. P(x = 7) for n ...In a 2011 Time/Money Magazine survey of adult Americans, 61% said that they were less sure that their children will achieve the American Dream (Time, October 10, 2011). Suppose that this result is true for the current ...Post your question

0