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A recent study reported that the prevalence of hyperlipidemia (defined as total cholesterol over 200) is 30% in children 2-6 years of age. If 12 children are analyzed,
A) What is the probability that at least 3 are hyperlipidemic?
B) What is the probability that 3 are hyperlipidemic?
C) How many would be expected to meet the criteria for hyperlipidemia?
we wish to estimate the mean using a sample size of n = 49. Find the probability that we could be correct within 1kg/m 2 .
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
The estimated salary range is $4,500, the margin of error should be $100 and the desired level of confidence is 95%.
Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested recently predicted a mean of 24.80 mpg and a standard deviation of 6.2mpg for highway driving. Assume that a normal model can be applied.
Is there evidence of violations of the usual ANOVA assumptions of equal variances and normal populations? Set up and perform appropriate TESTS at the α = 0.05 level of significance.
At the .05 significance level, can we conclude that the guideline is still reasonable?
What is the probability that between 30 and 40 of the delinquents will commit another crime?
Standard deviation of 7. At 0.01 significance level, is there more variation in first population?
Assume that you have a binomial experiment with p = 0.5 and a sample size of 100. The expected value of this distribution is.
Be sure to show whether you use the t- or z- value, and what value you use. Interpret the confidence interval in a single sentence. In another sentence, state why you used either the "t" or the "z".
Perform pair wise comparisons of the treatment means by computing a Tukey simultaneous 95 percent confidence interval for each of the pair wise differences μ1 - μ2, μ2 - μ3, and μ2 - μ3. Which type of program content results in the worst mean bran..
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
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