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In December of 1999, a research team at Ohio State University reported that the median allowance for U.S. teenagers is $50 per week, with a coefficient of skewness of 0.762. While some teenagers received no allowance, others reported receiving $200 per week. Based on this information, the mean allowance for U.S. teenagers is most likely.
For a sample of 20 stations last Tuesday the correlation was .78. At the .01 significance level is the correlation in the population greater than 0? t= .78-20.00/.01SQRT 20=?
A sample of 46 homes in a subdivision revealed that 20 were ranch style (as opposed to colonial, tri-level, or Cape Cod). Construct a 98 percent confidence interval for the true proportion of ranch style homes.
The given level of significance is an alpha of .005. Your MSA is 6,200 and your MSW is 1,000. Will you reject your null hypothesis that all population means are equal or will you not reject?
The researcher estimated that out of the 100 students at least 50% of the students would be exposed to movies and TV w/ crude humor at least 2-4 times per week.
Discuss some of the common uses of IQ tests. Do you think that IQ test should be used for these purpose? Does the Flynn effect alter your thoughts about the uses of IQ test? Explain.
Cash back when they make a purchase at a shoe store. or C. an entry into a sweepstakes when they make a purchase. I need to determine the probability of each option.
To find the necessary sample size to achieve the given level of accuracy of prediction.
A simple random sample of 50 items from a population with σ 6 resulted in a sample mean of 32.
Method of assigning probabilities based on historical data is known the?
what is the expected number of claims by males under 25? what is the standard deviation of the distribution. (How to show on excel using binodist formula).
Please state the steps used to perform a hypothesis test on the coefficient of correlation and provide a detailed example. Details are greatly appreciated!
A population has a mean = 80, with standard deviation = 8. The distribution of sample means for samples of size n = 4 selected from this population would have an expected value of?
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