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In 2004, a 59-year-old woman, about to give birth in December, set the record for age when pregnant.
a. If age of all mothers at the time of delivery has a mean of 27 and a standard deviation of 6, tell how many standard deviations above average this woman's age is.
b. Explain why the distribution of ages at time of delivery cannot be normal.
c. If we incorrectly applied the 68-95-99.7 Rule, it would tell us that half of 100% minus 99.7%, or 0.15%, of mothers are less than 9 years old at the time of delivery. Is the actual percentage higher or lower than this?
The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 575
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State the alternate hypothesis for this study? What critical value should be used to determine the rejection region? Use the 1 proportion Z-test.
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A Pool Supply sells all types of billiard equipment, and is considering manufacturing their own brand of pool cues. Mysti Farris, the production manager, is currently investigating the production of a standard house pool cue that should be very po..
test the research hypothesis at the .01 level
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Do these data provide sufficient evidence at the 0.01 significance to conclude that the unemployment rate in Boston was less than the national unemployment rate
Determine the optimum solution for the problem.
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