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Is the Diet Practical? When 40 people used the Weight Watchers diet for one year, their mean weight loss was 3.0 lb and the standard deviation was 4.9 lb (based on data from "Comparison of the Atkins, Ornish, Weight Watchers, and Zone Diets for Weight Loss and Heart Disease Reduction," by Daninger, et al., Journal of the American Medical Association, Vol. 293, No. 1). Use a 0.01 significance level to test the claim that the mean weight loss is greater than 0 lb. Based on these results, does te diet appear to be effective? Does the diet appear to have practical significance?
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
Which of the following assumptions is not made for the F-test for comparing three or more means?
For the set of data below construct a grouped frequency distribution that as well contains the real limits of each interval, midpoint of each interval, the cumulative frequency,
A business operates with 9 locations. Each year, each location is allotted an overtime budget based on the previous years' activity. The total overtime budget for all 9 locations is $10 million.
Find the probability that 4 of the 5 committee members belong to a union.Find the probability using hypergeometric distribution.
Many investigaters have studied the relationship between asbestos exposure and death from chronic obstructive pulmonary disease (COPD)
Obtain a test statistic and p-value assuming equal variances. Interpret these results.
A Myrtle Beach resort hotel has 120 rooms. In the spring months, hotel room occupancy is approximately 75%. What is the probability that at least half of the rooms are occupied on a given day?
Multiple choice question based on multiple regression - The t value obtained from the table to test an individual parameter at the 5% level
a) What statistical test should be used to analyze these data? b) Identify H0 and Ha for this study. c) Conduct the appropriate analysis d) Should H0 be rejected? What should the researcher conclude?
The mean top of knee height of a sitting mate is 20.7 in.
A two tailed test is conducted at 5% significance level what is the P-value required to reject the null hypothesis.
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