# BUS 308 Week 4 Quiz

**Tutor description**

1. Question : The manager of the quality department for a tire manufacturing company wants to study the average tensile strength of rubber used in making a certain brand of radial tire. The population is normally distributed and the population standard deviation is known. She uses a Z test to test the null hypothesis that the mean tensile strength is less than or equal to 800 pounds per square inch. The calculated Z test Statistic is a positive value that leads to a p-value of .067 for the test. If the significance level is .10, the null hypothesis would be rejected. True False 2. Question : For the chi-square goodness of fit test, the rejection point X2a is in Student Answer: the left tail of a chi-square curve. both the left and right tails of a chi-square curve. the right tail of the appropriate F curve. the right tail of a chi-square curve. 3. Question : Consider using p-value to test H0 versus Ha by setting ? equal to .10. We reject H0 at level ? of significance if and only

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