Wednesday, September 22, 2010

AP Stat: Three problems from class.

Here are the three problems from the presentation that you are to complete by Friday.

3) How many states would you have to visit to have a z-score of 1.5? (Use the class mean and standard deviation from your class survey to answer this question.)

4)  Data on the weights of cocker spaniels has a mean weight of 21.2 pounds. A cocker spaniel weighing 18.3 pounds has a z-score of -1.1. What is the standard deviation for this data?

5) Data for one fifth grade class' long jumps has a standard deviation of 1.6 feet. One fifth grade girl who jumped 7.8 feet has a z-score of 1.3. What is the mean distance jumped for fifth graders in this class?

No comments:

Post a Comment