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An article entitled "Survey Finds County Enjoys Good Health" reports that "the vast majority of [county] residents rate their health as good to excellent . . . 20% of nearly 5,000 adults surveyed described their health as excellent, 34% called it very good, and 30% called it good. Sixteen percent said they were in fair or poor health."12
a. If the questionnaire included five response options, what were they?
b. If the questionnaire included four response options, what were they?
c. In which case would you say the options were unbalanced: if there were five options given, or four, or both of these, or neither?
the sample mean was found to be 21.3 minutes, with a sample standard deviation of 5.5 minutes. Is there evidence to reject the claim at the alpha = 0.05 level?
the table summarizes data on smoking status and perceived risk of smoking and is consistent with summary quantities
a two-stage clinical trial is planned for for testing h0 p0.10 versus ha pgt0.10 where p is the proportion of
The probability that Mary will win a game is .01, so the probability that she will not win is .99. If Mary wins, she will be given $100.
Suppose that one fisher from each park is chosen at random. What is the probability that the fisher chosen from Clearwater had a license and the fisher chosen from Mountain View did not have a license?
Given a p-cap of 0.16, n = 100, construct a Confidence Interval of 95%. What does the Range created mean? What happends if n changes to 10? What does the new Range mean?
Are you safe in concluding on the basis of the correlation coefficient that an increase in the common dividends declared causes an increase in the stock price?
An engineer must decide between spread footings or piles for a foundation to support each column of a building. The soil strength is not known for certain, but could be low (?1), medium (?2), or high (?3). Spread footings for the building have a tot..
The manufacturer in Exercise 54 has noticed that the number of faulty cell phones in a produc- tion run of cell phones is usually small and that the quality of one day's run seems to have no bearing on the next day.
You are making several runs of a simulation model, each with a different value of some decision variable.
Use the Wilcoxon signed-rank test with a = 0.01 to determine whether there is any evidence that the median APR on student credit cards is less then 15.06.
Estimate the proportion of infants whose mothers experienced toxemia during pregnancy. Use 95% confidence level and doctors think that more than 20% of the infants their mothers experienced toxemia. Is that correct?
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