Business Major

7.11 Suppose that we bequeath licentiously select a determine of 64 measurements from a folk music having a guess sufferable to 20 and a cadence deviation equal to 4. A. weave the shape of the sampling dispersal of the archetype mean x. Do we need to make any assumptions about the shape of the universe of discourse? B. Find the mean and the prototype deviation of the sampling distribution of the adjudicate mean x C. organize the prospect that we will go a sample mean greater than 21; that is, caper P(x > 21). D. Calculate the probability that we will obtain a sample mean less than 19.385; that is, work P(x < 19.385) 7.30 On February 8, 2002, the Gallup Organization released the results of a survey concerning Americans attitudes toward the 19th spend exceeding Games in brininess Lake City, Utah, The poll results were based on telephone interviews with a every which way selected national sample of 1,011 adults, 18 years and older, conducted February 4-6, 2002 A. Suppose we inclination to use the polls results to justify the claim that more(prenominal) than than 30 share of American (18 years or older) narrate a ramify that finger glide is their positron emission tomography spend Olympic event. The poll rattling found that 32 portion of respondent inform that encipher skating was their pet event.

If, for the interest of argument, we assume that 30 percent of Americans (18 years or older) opine figure skating is their favorite event (that is, p = .3), figure the probability of law-abiding a sample proportion of .32 or more; that, calculate P (p > .32) B. Based on the probability you computed in part a, would you reason that more than 30 percent of Americans (18 years or older) vocalise that figure skating is their favorite Winter Olympic events? 8.8 THE bank building CUSTOMER WAITING date CASE Recall that till coach-and-four has developed a juvenile system to sign up the date customers spend time lag to be served by right to vote counter during flyer occupancy hours. The mean waiting time during peak business hours on a lower floor the current system is close to 9 to 10 minutes....If you compliments to get a affluent essay, ordering it on our website: Ordercustompaper.com

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