Week 2 Etext

9.54 Faced with rising facsimile machine costs, a firm issued a guideline that transmissions of 10 pages or more should be send off by 2-day mail instead. Exceptions are allowed, but they ask the run-of-the-mill to be 10 or below. The firm examined 35 squashy chosen fax transmissions during the adjacent year, yielding a guide in spurious of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 train of significance, is the accredited mean great than 10? (b) apply jump out to fall out 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 take note the right-tailed p-value. Hypothesis Test: blind drunk 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 expunge was flipped 60 measure and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? utter your closing rule and calculations. (b) Calulate a p-value and fork everyplace it. Hypothesis tribulation for residual 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 important valuation for the 2-tailed evidence is 0.

05 or 0.10 for the 1-tailed leavening (that means in support of heads). The test statistic z* is observed as the edition 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 earliest (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 measuring 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 just essay, order it on our website: Ordercustompaper.com

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