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Question: The average height of young adult males has a normal distribution with standard deviation of 2.5 inches. You want to estimate the mean height of students at your college or university to within one inch with 93% confidence. How many male students must you measure?
a total of 1232 students have taken a course in spanish 879 have taken a course in french and 114 have taken a course
a five number summary for hours studied in a week were 5 12 14 18 and 20. what was the shortest number of hours studied
The useful life (in hours) of a certain kind of integrated circuit is a random variable having the probability density
Find the number of cases needed if the design is 1:1 matched; matching criteria are various menstrual characteristics, exogenous estrogen use, and prior pelvic surgeries.
Suppose the FBI set of goal of 10% for breakins, and they want to see if the current data show they are below that mark. What are the appropriate null and alternative hypotheses?
In many state lotteries you can choose which numbers to play. Consider a common form in which you choose 5 numbers. Which of the following strategies can improve your chance of winning? If the method works, explain why. If not, explain why using a..
Identify the scale of measurement in each of the following:
mean is 100 and sd is 16. doug has an iq of 76. what proportion of people have a higher iq than
Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated location on the Los Angeles freeway system?
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance) Determine the p-value and interpret its meaning.
Best Ribs wishes to pay off a debt of $40,000 in 7 years. What amortization payment would they need to make each six months, at 6% interest compounded semiannually? (Use Table 12-2 from your text)
What are the mean and standard deviation for the sum of the ages of tablet users? What is the distribution?
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