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A poll found that in a random sample of 1000 American adults, 730 indicated that they oppose the reinstatement of a military draft. Is there convincing evidence that the proportion of American adults who oppose reinstatement of the draft is greater than 0.7? Use a significance level of 0.05. (For z give the answer to two decimal places. For P give the answer to four decimal places.)
The participants in a television quiz show are picked from a large pool of applicants with approximately equal numbers of men and women.
Normal distribution of 5 pounds per square inch, standard deviation of 1.5 pounds per square inch, what proportion have less that 3.17 pounds per square inch, at least 3.6 pounds, are between 5 and 5.5 and 95% will be contained between what two va..
The manager of the greeting card section of Mazey's department store is considering her order for a particular line of Christmas Cards. Develop the payoff table for this decision situations.
Prepare a power curve for this decision rule
An economist found that a random sample of 42 high school teachers had an average annual salary of $56,490. A previous study showed that the population standard deviation is $4150. Find the 99% confidence interval for µ, the average annual salary ..
Identify at least three methods of statistical inference. Describe in detail each method and how you could use this method in your discipline. You may not use the same tests indicated in your research proposal.
A sample of n=20 has a mean of M=40. If the standard deviation is s=5, would a score of x=55 be considered an extreme value?
The manager of a package courier service believes that packages shipped at the end of the month are heavier than those shipped early in the month.
An economist is interested in studying the spending habits of consumers in a particular region. The population variance is known to be $1,000,000. A random sample of 50 individuals resulted in an average expense of $15,000. What is the width of th..
Based on the numbers presented, what do you think of the discrimination claim?
A range of values constructed from sample data so that the parameter occurs within that range at a specified probability is:
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
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