Probability

DUE: December 10, 2016 at 10:00am EST

Please complete the questions below in WORD format  with stating the question and then answering it below.

Please see the additional instructions below.

Search the Internet for U.S. climate data.

Choose: Washington, D.C. 

Click on the tab that reads “Daily.” 

1. Prepare a spreadsheet with three columns:  Date, High Temperature, and Low Temperature.  List the past 60 days for which data is available.

1. Prepare a histogram for the data on high temperatures and comment on the shape of the distribution as observed from these graphs.

1. Calculate  and S. 

1. What percentage of the high temperatures are within the interval   – S to  + S?

1. What percentage of the high temperatures are within the interval   – 2S to  + 2S?

1. How do these percentages compare to the corresponding percentages for a normal distribution (68.26% and 95.44%, respectively)?

1. Repeat Parts 2 to 6 for the minimum temperatures on your spreadsheet. 

1. Would you conclude that the two distributions are normally distributed?  Why or why not?