Listed below are the costs (in dollars) of repairing the front end and rear end of cars when they were damaged in controlled low-speed crash tests. The nine cars are Toyota, Mazda, Volvo, Saturn, Subaru, Hyundai, Honda, Volkswagen, and Nissan. Use a 0.05 significance level to test the claim that there is a difference in the repair costs between between front end and rear end accidents? Toyota Mazda Volvo Saturn Subaru Hyundai Honda Volkswagen Nissan Front Cost: 1936 978 2252 2032 2911 1312 3469 2598 2535 Rear Cost: 1480 1102 1802 1191 3122 739 2769 2375 1787 Statistical Metho:  Conclusion: 

Directions: Work each problem on your own paper.  Please be sure to clearly label your work for each problem with the correct problem number so that it is easy for me to find your work.  When you have completed the exam, you will submit a pdf scan of your work.  Your exam cannot be graded without this scan. SHOW ALL WORK. Credit will not be given for answers without supporting work. Take your time and relax! Important:  When you are done you must submit your exam. You may use the following sites during the exam. https://www.cemetech.net/projects/jstified/       You will need to download this ROM file (ti84plus.rom Download ti84plus.rom) and upload it to the website.  https://www.desmos.com/calculator. https://www.desmos.com/scientific. To take the Exam 2 please click on the link below.  Write down the password:  WeLoveMath.  You will need it to access the exam. Right-click here to open and take Exam 2 in a new tab:  Exam 2

In a study of television ratings, groups of six U.S. households are randomly selected. In the table below, the random variable x represents the number of households among 6 that were tuned in to watch the 2018 television premiere of The Walking Dead. Is two a significantly high number of the selected households to be tuned to watch the premiere? Why or why not?

Billy Joe’s Ice Cream store is interested how the weather affects their ice cream sales. The following table represents data from randomly selected spring, summer, and fall months over a few years. The number of days in the month with no cloud cover and the numbers of ice cream cones sold for that month were recorded. Determine if there is a linear correlation between the number of days with no cloud cover and the number of ice cream cones sold. Statistical Method:  Is there significant linear correlation?  Yes or No?   Using the data above, find the regression line, and preict the number of cones sold when a month has 13 days with no cloud cover. Regression Line:  Number of cones sold: 

You are now finished.  Please press submit and then use the assignment titled “Submit Final Exam Scratch Paper Here” in the Week 16 module to submit your scratch paper.  Your exam cannot be graded without the scratch paper.

Heights of Chihuahuas in a certain are normally distributed with a mean of 7.5 inches and a standard deviation 1.5 inches. If a group of 12 Chihuahuas is selected, find the probability that their mean height is shorter than 7 inches. Statistical Method:  Conclusion: 

A new coach claims that 30% of basketball players are left handed.  Out of a sample of 73 basketball players, 15 are left handed.  Use a 0.05 significance level to test the coach’s claim. Statistical Method:  Conclusion: 

The following table contains data from a study of voters in two major California cities a. If one of the voters is randomly selected, find the probability that the voter is a democrat.  b. If one of the voters is randomly selected, find the probability that the voter selected was from Fresno or a republican.  c. If one of the voters is randomly selected, find the probability that the voter was a democrat, given that the voter was from San Francisco.  d. If two voters are randomly selected, find the probability that they are both democrats. 

You may use the following Stats Packet document on Exam 2 for reference: Stats Formulas Calculations Guide (with tables)-1.pdf

Use the following data to create a stemplot. The midterm test scores for a typing class are listed below: 85    77    93    91    74    65    68    97    88    59    74    83    85    72    63    79