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In basketball, a player's Free Throws Percentage (FT%) is expressed as a number between 0 and 1, which represents the proportion of free throw attempts that are successful. In the NBA, FT% is normally distributed with a mean of 0.721 and a standard deviation of 0.082.
Which percentage of NBA players have a FT% lower than 0.784?
a) Set up the null and alternative hypotheses, and perform the hypothesis test. b) Does the jury selection system appear to be fair?
Assume we have three different samples each comprised of 20 different jurisdications. Our objective is to compare the seriousness of juvenile substance abuse across all the samples.
In classical hypothesis testing, test statistic is to critical value what the?
In order to estimate the proportion of families who prefer female baby-sitters to male baby-sitters with an error of at most 8 percentage points and with at least 95 percent confidence, how large a sample should be taken?
Determine probability of generating six digits and getting code consisting of 1, 2, 3, ..., 6 if each digit can be repeated?
A sample of 60 smokers has a mean cotinine level of 125. Assuming that sigma=25, find the 90% confidence level estimate of the mean cotinine level of all smokers.
At the 5% level do the data provide sufficient evidence to conclude that the mean time served for fraud is less than that for firearms offenses? Identify the appropriate test and test the claim using the traditional method at the 0.05 level of sig..
In the spring of 2002, residents of the United States were quite worried about the possibility of further terrorists attacks. To gauge the public's sentiment on this topic, the Gallup Poll asked 1002 U.S.
Developing the histogram and pie chart for the sample data.
The Manager of a seafood restaurant was asked to establish a pricing policy on lobster dinners. Experimenting with prices produced the following data:
The mean score on a standardized psychology test is supposed to be 50. Believing that a group of psychologists will score higher, we test a random sample of 11 psychologists.
Find the probability of committing a type I error.
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