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A sample of n=9 scores is obtained from a normal population distribution with o-=12. The sample mean is M=60.
a- with a two-tailed test and o=.05,use the sample data to test the hypothesis that the population mean is u=65.
b- with a two-tailed test and o=.05, use the ample data to test the hypothesis that the population mean is u=55.
c- In parts (a) and (b) of this problem, you should find the u=65 and the u=55 are both acceptable hypotheses. Explain how two different values can both be acceptable.
Design a 95 percent confidence interval for the proportion of defectives in a large lot, if a sample of 200 showed 12 defectives.
Explain the ANOVA output table values:
What is the probability that a randomly selected fertilized egg hatches in less than 19 days? (Round to four decimal places as needed).
Conduct a hypothesis test at the 6% level of significance to determine whether there is evidence that the true mean fill volume for all jugs of softener differs from 120 ounces.
The sat scores attainted by the students in nyc are approximately normally distributed with a mean of 500 and a standard deviation of 80. Find the percentage of students who score less than 700.
Test hypothesis that average price of gasoline in western states is higher than national average for Continental USA and the District of Columbia, i.e., higher than $3.74.
Toledo, OH has been experiencing improved economic growth following huge capital investments from companies like Chrysler. You have just been hired by RGP, an agency for facilitating business expansion and location in the Toledo metropolitan area.
Merrill Lynch Securities and Health Care Retirement, Inc., are two large employers in downtown Toledo, Ohio. They are considering jointly offering child care for their employees.
A bag contains 5 blue balls and 8 purple balls. If 3 balls are chosen randomly and without replacement, form the bag. Let x be the number of blue balls obtained. Then x has a distribution.
What factors might cause the company to order a larger or smaller amount than the EOQ?
The results of a survey for an airline are shown below. Use the chart to find the probability that the traveler was
Using the following information, find the equation of the regression line, and predict the heart rate when 0.27 milligrams of the drug is used.
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