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The Complete Idiot's Guide to Statistics, 2nd Edition by Robert Donnelly

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Your Turn

1. Test the claim that the average SAT score for graduating high school students is equal to 1100. A random sample of 70 students was selected, and the average SAT score was 1035. Assume σ = 310 and use α = 0.10. What is the p-value for this sample?
2. A student organization at a small business college claims that the average class size is greater than 35 students. Test this claim at α = 0.02, using the following sample of class size:
511
Assume the population is normally distributed and that σ is unknown.
3. Test the claim that the average gasoline consumption per car in the United States is more than 7 liters per day. (We’re going ...

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