Author Question: Describe the process for finding probabilities using z scores and the standard normal distribution. ... (Read 29 times)

littleanan · **on:** Aug 1, 2018

Describe the process for finding probabilities using z scores and the standard normal distribution. Give an example to support your description.

What will be an ideal response?

Question 2

Compute the variance. A class of sixth grade students kept accurate records on the amount of time they spent playing video games during a one-week period. The times (in hours) are listed below:

11.8 12.4 17.5 14.5 17.9
21.6 15.7 30.4 26.6 29.2
A) 46.87 B) 194.43 C) 42.27 D) 46.97

Christopher · **Reply #1 on:** Aug 1, 2018

Answer to Question 1

The process should include sketching the diagram, marking the z score on the diagram, shading the appropriate area of interest, finding the area corresponding to the z score in the table (the area between the mean and the z score), then using that area to find the shaded area of interest. Student examples may vary.

Answer to Question 2

D