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Heights of men on a baseball team have a bell shaped distribution with a mean of 183 cm and a standard deviation of 5 cm. Using the Empirical rule, what is the approximate percentage of the men between the following values?
A. % between 178 and 188 cm
B. % between 168 and 198 cm
The binomial distribution approaches normality as N increases. Explain how this relationship is useful for solving binomial problems involving N > 20. What are the advantages and disadvantages of this approach?
Determine whether families with income of $40,000 will have to spend less than $6,500 to send their children to prestigious colleges. (Use α = 0.05.)
The typical homeowner has a utility function equal to the square root of wealth. Will the homeowner retrofit the house, and if so, which insurance policy will the homeowner buy?
A 99% confidence interval estimate of the population mean can be interpreted to mean that we have 99% confidence that the true population mean will fall within the confidence interval estimate.
Suppose you estimate a regression model to predict weekly expenditures on food per person. Would you be pleased if your model estimate a Standard Error =$300 EXPLAIN?
Determine the maximum error of the estimate, E. Determine the confidence level used for the given confidence interval.
At one excavation site 8641 pot shards have been found that not yet been cleaned and identified. What is the probability that:
Discuss how the statistical application of Pearson r is used for hypothesis testing. Through application of the Spearman Correlation discuss what type of data the Pearson formula can be used for.
Compute the Kappa statistic and its standard error regarding reproducibility of the diagnosis of dyspnea in the clinic.
How many Corolla buyers must be surveyed if we want to be 95% confident that the sample percentage is within four percentage points of the true percent all Corolla buyers?
Do you think they can be solved explicitly? Take the derivative of the gamma distribution and set it equal to zero and solve for alpha and beta to find the mle?
The store used ANOVA to test if the mean sales for each credit card were equal. What are the degrees of freedom for the F statistic?
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