# Question: The College Board website provides much information for students parents

The College Board website provides much information for students, parents, and professionals with respect to the many aspects involved in Advanced Placement (AP) courses and exams. One particular annual report provides the percent of students who obtain each of the possible AP grades (1 through 5). The 2008 grade distribution for all subjects was as follows:

AP Grade Percent

1........ 20.9

2........ 21.3

3........ 24.1

4........ 19.4

5........ 14.3

a. Express this distribution as a discrete probability distribution.

b. Find the mean and standard deviation of the AP exam scores for 2008.

AP Grade Percent

1........ 20.9

2........ 21.3

3........ 24.1

4........ 19.4

5........ 14.3

a. Express this distribution as a discrete probability distribution.

b. Find the mean and standard deviation of the AP exam scores for 2008.

## Answer to relevant Questions

The number of children per household, x, in the United States in 2008 is expressed as a probability distribution here. a. Is this a discrete probability distribution? Explain. b. Draw a histogram for the distribution of x, ...The random variable has the following probability distribution: a. Find the mean and standard deviation of b. What is the probability that is between m _ σ and m _ s ? a. Explain why the variable “number of saved telephone numbers on a person’s cell phone” is discrete. b. Explain why the variable “weight of a statistics textbook” is continuous. Consider a binomial experiment made up of three trials with outcomes of success, S, and failure, F, where P(S) _ p and P(F) = q. a. Complete the accompanying tree diagram. Label all branches completely. b. In column (b) of ...Test the following function to determine whether or not it is a binomial probability function. List the distribution of probabilities and sketch a histogram.Post your question