Practice Problems Ch 4

Practice Problems Ch 4 - Practice Problems 1 Practice...

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Practice Problems 1 Practice Problems Sabrina Armstrong PSY/315 February 13 th , 2012 Tiffany Cron
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Practice Problems 2 11. List the five steps of hypothesis testing, and explain the procedure and logic of each. Solution: The 5 steps in hypothesis testing are: Step – 1 (Formulate and State the Hypothesis) Step – 2 (Decide on the Significance Level and the Type of Test) Step – 3 (State the Decision Rule) Step – 4 (Calculate the Test Statistic) Step – 5 (Calculate the p- value and State the Conclusion) What happens in each step is best understood with the help of an example. Here is one: Problem - The manufacturer of the X-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. The standard deviation of the mileage is 5,000 miles. The Crosset Truck Company bought 48 tires and found that the mean mileage for their trucks is 59,500 miles. Research Question: Is Crosset’s experience different from that claimed by the manufacturer at
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This note was uploaded on 02/23/2012 for the course ANT 101 taught by Professor Wright during the Spring '11 term at Ashford University.

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Practice Problems Ch 4 - Practice Problems 1 Practice...

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