Week 2 Etext

9.54 Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be confide by 2-day mail instead. Exceptions ar allowed, but they indigence the popular to be 10 or below. The firm examined 35 hit-or-miss chosen fax transmissions during the following(a) year, yielding a regard in misbegotten of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 train of significance, is the square(a) mean great than 10? (b) call jump out to shape 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 catch out the right-tailed p-value. Hypothesis Test: correspond vs. Hypothesized Value 10.0000 14.4400 4.4500 0.7522 35 34 5.90 5.76E-07 hypothesized value mean determine std. dev. std. defect n df t p-value (one-tailed, upper) 9.56 A capital 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 decisiveness rule and calculations. (b) Calulate a p-value and consider it. Hypothesis tribulation for proportionality 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 paygrade for the 2-tailed evidence is 0.

05 or 0.10 for the 1-tailed canvasing (that means in support of heads). The test statistic z* is observed as the variety between the seen proportionality and test proportionality = 0.633 - 0.50 = 0.1333, divided by the standard error of the symmetry (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 fortune of 0.0194 or 1.94%, that is slight than the 0.10 alpha level. The 2-tailed probability is two times this amount of money or 0.0389, that is also less than ? =0.10. We will give everyplace from the NULL theory and...If you want to get a serious essay, order it on our website: Orderessay

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