Question: The New York Stock Exchange recently reported that the average
The New York Stock Exchange recently reported that the average age of a female shareholder is 44 years. A broker in Chicago wants to know whether this figure is accurate for the female shareholders in Chicago. The broker secures a master list of shareholders in Chicago and takes a random sample of 58 women. Suppose the average age for shareholders in the sample is 45.1 years, with a population standard deviation of 8.7 years. Test to determine whether the broker’s sample data differ significantly enough from the 44-years figure released by the New York Stock Exchange to declare that Chicago female shareholders are different in age from female shareholders in general. Use α = .05. If no significant difference is noted, what is the broker’s probability of committing a Type II error if the average age of a female Chicago shareholder is actually 45 years? 46 years? 47 years? 48 years? Construct an OC curve for this data. Construct a power curve for these data.
Answer to relevant QuestionsA Harris poll was taken to determine which of 13 major industries are doing a good job of serving their customers. Among the industries rated most highly by Americans for serving their customers were computer hardware and ...Solve for the value of beta in each of the following problems.a. H0:µ = 130Ha: µ > 130 n = 75σ = 12α = .01.The alternative mean is actually 135.b. H0:µ = .44 Ha: p < .44n = 1095α = .05.The alternative proportion is ...A financial analyst watched a particular stock for several months. The price of this stock remained fairly stable during this time. In fact, the financial analyst claims that the variance of the price of this stock did not ...The American Water Works Association reports that, on average, men use between 10 and 15 gallons of water daily to shave when they leave the water running. Suppose the following data are the numbers of gallons of water used ...Examine the following data. Assume the variances for the two populations are 22.74 and 26.65, respectively.a. Use the data to test the following hypotheses (α = .02).H0: µ1 - µ2 = 0 Ha: µ1 - µ2 ≠ 0.:.b. Construct a ...
Post your question