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Heights of women have a bell-shaped distribution with a mean of 161cm and standard deviation of 5cm.
a) Using the empirical rule, what is the approximate percentage of women between 156cm and 166cm?b) Using Chebyshev's Theorem, at least what percentage of women are between 149cm and 173cm?
Find the probability of a type I error α if the true proportion is p=0.6.
A random sample of 60 days shows that the mean daily number of gallons sold is 10.00. What is the point estimate of the population mean?
Find out the least-squares regression line and interpret its slope.
Estimate the population mean
Plot Kaplan-Meier Survival curve estimates along with true survival curve for n=25,100,1000
A sociologist is studying the prevalence of crime in one major city. In a sample of 225 randomly selected residents, 60 say that they have been victimized by a criminal.
One possible explanation for why some birds migrate and others maintain year round residency in a single location is intelligence.
We would like to test if the proportion of respondents that support the health care bill is less than 50% (a) what kind of hypothesis test is appropriate?
Determining the probability that the two choose the same number?
The carpeting department supervisor claims that the average number of days between the receipt of a complaint and its resolution is 20 days or less.
Under what situations on lambda1 and lambda2 will this system have the steady state distribution? Describe your answer.
State the alternative hypothesis that would be used to determine if Brand A has a higher proportion of defective smoke detectors than Brand B. Calculate the test statistic for determining if a difference exists between the failure rates of the two..
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