Chapter 8 Key Ideas Hypothesis (Null and Alternative), Hypothesis
... Example: Fast food example from the beginning of the chapter. We saw that Z had a standard normal distribution when H0 was true. Since the alternative hypothesis is that µ > 3.5, the “unlikely” values of Z will be those that are too large. Therefore, the critical region, critical value, and signific ...
... Example: Fast food example from the beginning of the chapter. We saw that Z had a standard normal distribution when H0 was true. Since the alternative hypothesis is that µ > 3.5, the “unlikely” values of Z will be those that are too large. Therefore, the critical region, critical value, and signific ...
Recall, general format for all sampling distributions in Ch. 9: The
... • Compare weight loss for men and women at the weight loss clinic. • Compare UCI students with students from another campus on quantitative measures like hours spent studying per week, income, etc • Compare number of sick days off from work for people who had a flu shot and people who didn’t • Compa ...
... • Compare weight loss for men and women at the weight loss clinic. • Compare UCI students with students from another campus on quantitative measures like hours spent studying per week, income, etc • Compare number of sick days off from work for people who had a flu shot and people who didn’t • Compa ...
Today: Finish Chapter 9 (Sections 9.6 to 9.8 and 9.9 Lesson 3
... blank is filled in with the statistic ( pˆ , pˆ 1 − pˆ 2 , x etc.) • Often the standard deviation must be estimated, and then it is called the standard error of _______. See summary table on pages 382-383 for all details! ...
... blank is filled in with the statistic ( pˆ , pˆ 1 − pˆ 2 , x etc.) • Often the standard deviation must be estimated, and then it is called the standard error of _______. See summary table on pages 382-383 for all details! ...
Steps in Testing a
... Null and Alternative Hypotheses and Errors in Hypothesis Testing • The null hypothesis, denoted H0, is a statement of the basic proposition being tested. The statement generally represents the status quo and is not rejected unless there is convincing sample evidence that it is false. • The alternat ...
... Null and Alternative Hypotheses and Errors in Hypothesis Testing • The null hypothesis, denoted H0, is a statement of the basic proposition being tested. The statement generally represents the status quo and is not rejected unless there is convincing sample evidence that it is false. • The alternat ...
To Enhance Learning Exercise your Knowledge
... skewed to the right (C): pth percentile = p(n+1) / 100; Hence the 80th percentile = 80(25+1) / 100 = 20.8 which is approximated to the 21st number which is 1.502. (D): z = {x – xbar) / s = (0.668 – 1.071) / 0.4765 = - 0.8458 A negative z – score indicates that the observation lies to the left of the ...
... skewed to the right (C): pth percentile = p(n+1) / 100; Hence the 80th percentile = 80(25+1) / 100 = 20.8 which is approximated to the 21st number which is 1.502. (D): z = {x – xbar) / s = (0.668 – 1.071) / 0.4765 = - 0.8458 A negative z – score indicates that the observation lies to the left of the ...
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... Except in the case of small samples, the assumption that the data are an SRS from the population of interest is more important than the assumption that the population distribution is Normal. Sample size less than 15: Use t procedures if the data appear close to Normal (symmetric, single peak, no o ...
... Except in the case of small samples, the assumption that the data are an SRS from the population of interest is more important than the assumption that the population distribution is Normal. Sample size less than 15: Use t procedures if the data appear close to Normal (symmetric, single peak, no o ...
