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Which of the following is a valid null hypothesis?

OPTIONS Y = 95 Y < 95 Y > 95 Y <> 95 ANSWER Y = 95 EXPLANATION A statistical hypothesis test determines if there is enough evidence to reject the null hypothesis at a given significance level. The null hypothesis must contain an equal...
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Where is the F-distribution used?

OPTIONS To model discrete data when the population size is small compared to the sample size To make decisions and construct confidence intervals by summing the square of normal random variables To test for equality of variances from two normal populations To compensate for error...
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Find the probability

It has been observed that the number of defects in the finish of a surface has an overage of 0.45. What is the probability of a randomly selected item having more than 1 defect in the surface finish? OPTIONS 0.45 0.2869 0.05 0.0755 ANSWER 0.0755...
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