Suppose that a researcher wants to see if there is any difference between how fa

Question

Suppose that a researcher wants to see if there is any difference between how fast people work in the morning and how fast they work in the evening. (a) What is the null hypothesis? (b) What is the research hypothesis? A researcher was interested in whether children from lower socioeconomic backgrounds have lower than average test taking skills. A standard measure of test taking skills was administered to a randomly chosen child with a low socioeconomic background who was found to have a score of 38. The population average is 50 with a standard deviation of 10. (a) Propose suitable null and alternative hypotheses. (b) What is a suitable comparison distribution? (c) Determine the critical score on the comparison distribution at which the null hypothesis should be rejected to give a significance level of 0.05. (d) Compare the subject's score with this critical score. (e) Decide whether to reject the null hypothesis and state your conclusion.

Explanation / Answer

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1) Two independent sample will be taken and their means will be compared.

Null Hypothesis: Ho

m = e

2) Alternative hypothesis: Also called alternative hypothesis

H1:

m e

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