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For a population of exam scores, a score of X=29 corresponds to z=0.5 and a score of X=20 corresponds to z=-1.0. Find the mean and standard deviation for the population.
Find out optimal assignment and calculate total minimum cost.
Use the relative frequency approach to construct a probability distribution for the number of tests taken.
Determine the following probabilities: Events A and B are mutually exclusive events defined on common sample space.
Standard error for regression equation - determination and non determination and explain the meaning of each.
Hypothesis testing of single mean - can we conclude that the mean weight is greater than 16 ounces? Determine the p -value.
Using the p-value approach, test the hypotheses at the 1% level of significance.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Using Analysis of Variance (ANOVA) test at 5% level if there are important differences in mean sales calls made across the three branches.
Test the whether the attitude toward keeping weight down associated with smoking status.
Which of the following would produce a new confidence interval with smaller width based on these same data and produce a new confidence interval
Can the company claim that they are faster than the average utility?
Explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing);
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