STAT 245 Lecture Notes - Lecture 52: List Of Breaking Bad And Better Call Saul Characters, Null Hypothesis, Test Statistic
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Q: what are the steps for performing a hypothesis test? (let"s flesh out think, show, and tell. ) There is a temporal demarcation line: the situation changes. Certains should not be done after this happens. Summary of ht procedure: state research objective and null hypothesis, state approach, significance level, assumptions, ground rules, collect data, analysis. Look up the critical value, e. g. , fc ri t. Example #_: (johnson & kuby ill. 8. 18; 3rd,p. 352; 9th,p. 394) a simple z test. It is claimed that the mean weight of women at a u. s. college is 54. 4 kg. Professor hart disputes this claim, and will conduct a study to that end. (a) the original problem, as given: his null hypothesis is. : 54. 4: is known to be 5. 4 kg. Assume that the distribution of weights is normal. He will use a significance level of =0. 05. He will collect a random sample of 100 weights: the sample mean is 53. 75 kg.
