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State Percentage who smoke Cancer incidence per 100,000 (age-adjusted)
Kentucky 27.4% 498.2
Pennsylvania 22.6% 496.2
Maine 20.9% 508.9
New York 19.9% 469.3
Maryland 19.5% 488.0
Utah 10.5% 405.7
A. Explain why it might be important to look at cancer incidence that is age-adjusted rather than just cancer incidence.
B. Perform simple linear regression on these data and report your finding.
C. Explain the significance of the Pearson correlation coefficient and the coefficient of determination.
The manufacturer of a coffee dispensing machine claims the ounces per cup is normally distributed with population mean equal to 8 ounces and standard deviation equal to 0.9 ounces. If 50 cups of coffee were measured, what is the probability that.
At the .01 significance level, can we conclude that there is more variation in the selling prices of the oceanfront homes?
What is the appropriate conclusion based on the outcome of the hypothesis test?
Assume the distribution of the length of the cuts follows a normal distribution with a standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CD's Inc. What can we say about the shape of the distributio..
The gambler is paid later as follows, depending on the number of winners he picked. What is his expected gain? Remember, a loss is a negative gain, and that the bookie keeps the gambler's $20.
Confirm that these statements are accurate by finding the geometric mean rate of increase.
What is the appropriate inferential statistical test for the case scenario? Why?
The average family size was reported as 3.18. A random sample of families in a particular school district resulted in the following family sizes: 5 4 5 4 4 3 6 4 3 3 5 6 3 3 2 7 4 5 2 2 2 3 52
The dean of a nursing school claims that the average starting salary of its graduates is more than 60 (in $000's). It is known that the population standard deviation is 10 (in $000's).
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
Determine the average score for ERAU graduates? Determine the value of test statistic? Significance level?
A sociologist wants to describe if the life expectancy of people in Africa is lesser than the life expectancy of people in Asia.
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