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Find historical information on the statisticians who developed statistical tests, such as the normal distribution, Student t distribution, Chi-Square distribution, F distribution, Mann-Whitney test, Pearson product-moment correlation, Spearman rank correlation, Wilcoxon nonparametric tests, Kruskal-Wallis test, Levene test, Ryan-Joiner test, Fisher exact test, and McNamar test. Tell us who these people are and how they happened to make their discoveries and subsequent creations. Identify your Internet sources with an active link.
Construct a 95% confidence interval for the population mean.
Suppose U is a Unit (25, 50) random variable.Find the CDF of U and sketch a graph.
To conduct a follow-up study that would provide 95% confidence that the point estimate is correct to within plus-or-minus 0.04 of the population proportion, how large a sample size is required?
Experience has shown that radon gas level is approximately normally distributed for this population.
Suppose you went to the Bureau of Labor Statistics web site and found several predictors of your salary. State three possible predictors and a simulated multilinear regression equation along with their p-values. What does your p-values tell you ab..
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
At the 1% significance level, can it be concluded that the current distribution of responses differs from that of a year ago ?? Formulate and test the appropriate hypotheses. Use the critical value approach.
Determine the standard deviation of difference between Sarah's and Richard's scores?
Determine the probability that the project will be completed in 70 days or less.
Estimate the values using multiple regression models. An air conditioning as well as heating repair firm conducted a study to determine if the outside temperature, Illustrate the forecasted monthly electric bill.
Compute the minimum sample size required assuming that no prior information is avaiable?
How should the candidate purchase the five commercials to maximize the estimated number of additional voters?
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