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Many people believe that unusual behavior is more likely to occur during a full moon. In fact, they believe that twice as many events happen during the full moon as during the other phases. As a test for empirical evidence to support this belief, suppose that you categorized the visits of new clients to a community health unit over a one-year period by lunar phases and found the following distribution of visits:
Full Moon: 82
New Moon 50
First quarter 40
Third quarter 48
Do new visits vary with the phase of the moon?
Do the appropriate statistical test and write a statement of results.
The population standard deviation was 1.7 years using .95 degree of confidence what is the confidence interval for the population mean?
joint pmf p(X1,X2)=(X1+2X2)/18, (x1,x2)=(1,1),(1,2),(2,1),(2,2), zero elsewhere. Determine the conditional mean and variance of X2, given X1=x1, for x1=1 or 2. Also compute E(3X1-2X2).
Suppose that the mean of the annual return for common stocks from 2000 to 2012 was 8.5%, and the standard deviation of the annual return was 25.2%.
Sam Hill, Director of Media Research in Christchurch,
The Price-to-Earnings ratio (P/E) of a publicly listed profit-making company is defined as the ratio of the stock price of the company to the earnings per share.
Children toilet train (training age normally distributed) at an average of 26 months with a standard deviation of 2 months. How lilely is child to be trained after 30 months?
What is the probability that the sample proportion of grocery stores selling Haagen-Dazs ice-cream, will be within 0.01 of the population proportion?
given the following hypothesesh0 mu 400h1 mu ne 400for a random sample of 12 observations the sample mean was
The mean of land and buildings per acre from a sample of farms was $637, with a standard deviation of 26. Use Empirical Rule to find approximate percentage of acreage whose values were between $ 661 and $663.
How many different possibilities exist for the set of iced-tea drinks that a given participant will taste? (Show how you calculated your answer.)
A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were caused by the keyboard. The injury awarded about $3.5 million for pain and suffering, but the court then set aside that award as being unreasonabl..
five students ann betty clint douglas and edward are rated equaly qualified for admission to law school ahead of other
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