Week 2 Etext

9.54 Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be localise by 2-day mail instead. Exceptions are allowed, but they indigence the mean(a) to be 10 or below. The firm examined 35 quaggy chosen fax transmissions during the next year, yielding a ingest in mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 train of significance, is the neat mean great than 10? (b) social occasion jump out to find the right-tailed p-value. (a) At the .01 level of significance, is the true mean greater than 10? Sure, the true mean is greater than 10. (b) Use outmatch to find the right-tailed p-value. Hypothesis Test: slopped vs. Hypothesized Value 10.0000 14.4400 4.4500 0.7522 35 34 5.90 5.76E-07 hypothesized value mean set std. dev. std. defect n df t p-value (one-tailed, upper) 9.56 A take was flipped 60 measure and came up heads 38 times. (a) At the .10 level of significance, is the coin biase d toward heads? utter your decision rule and calculations. (b) Calulate a p-value and correspond it. Hypothesis tribulation for proportion vs hypothesized value Observed 0.6333 38/60 38. 60 Hypothesized 0.5 30/60 30. 60 0.0645 2.07 0.0389 p (as decimal) p (as fraction) X n std. error z p-value (twotailed) The alpha valuation for the 2-tailed evidence is 0.

05 or 0.10 for the 1-tailed testing (that means in support of heads). The test statistic z* is observed as the variety between the seen proportionality and test dimension = 0.633 - 0.50 = 0.1333, divided by the standard error of the ratio (SE). The SE for a ratio is identified as the SQRT (pq/n)! , where p and q were the ratio and 1proportion described to begin with (0.633 and 0.3667). We obtain an SE valuation of 0.06455 It helps to make the test statistic z* = 0.133/0.06455 = 2.0656 Applying one-sided hazard of 0.0194 or 1.94%, that is slight than the 0.10 alpha level. The 2-tailed probability is two times this quantity or 0.0389, that is also less than ? =0.10. We will give over from the NULL theory and...If you want to get a unspoilt essay, order it on our website: OrderCustomPaper.com

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