Can you "dumb down" this question for me and explain it step by step? i really...

Can you "dumb down" this question for me and explain it step by step? i really don't get any of it, so i need a really thorough explanation of how you got that answer. thank you so much!

(A) The students at Littlewood Regional High School cut an average of 3.3 classes per month. A random sample of 117 seniors averages 3.8 cuts per month, with a standard deviation of 0.53. Are seniors significantly different from the student body as a whole? (HINT: the wording of the research question suggests a two-tailed test. This means that the alternative, or research, hypothesis in step 2 will be stated as H1: m ? 3.3 and that the critical region will be split between the upper and lower tails of the sampling distribution. See Table 8.1 for values of Z(critical) for various alpha levels. )

(B) What if the research question were changed to “Do seniors cut a significantly greater number of classes”? How would the test conducted in prob- lem 8.2a change? (HINT: This wording implies a one tailed test of significance. How would the research hypothesis change? For the alpha you used in problem A, what would the value of Z (critical) be?)

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orchestra answered 1 year ago

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