Quiz101 - d Sketch and clearly label the model using the.7...

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Name: _______________________ Statistics Quiz #10: Chapter 18 Please Show All Work!!!!! 1. It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot. a) Write in words what p is. b) Why is it acceptable to use a Normal model for this sampling distribution? c) What is the mean and standard deviation of the model?
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Unformatted text preview: d) Sketch and clearly label the model using the 68-95-99.7 Rule. e) What is the probability that in this group over 20% of the new cars will be found to have electrical problems? f) Would you think it were strange if 21% of the 128 cars tested had electrical problems? Why or why not? Use statistics in your answer. If you don’t use ideas from class, you won’t get credit!...
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This note was uploaded on 04/12/2011 for the course STA 215 taught by Professor Tba during the Spring '08 term at Grand Valley State.

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