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Write down the difference between reliability and validity? Write down the different kind of reliability and validity. What kind of reliability and validity would you seek in assessing employee performance?
Compute mean, standard deviation, coefficient of variation and 5 key percentiles for these data.
if 100 tires are randomly selected for shipment to an outlet, what is the probability that they are all good? should this outlet plan to deal with defective tires returned by consumers?
What is the probability that the participant was aged 20-40 or was influenced by ipad the most? What is the probability that the participants were influenced by ipod the most, given that the participants are aged under 20?
A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal.
At the .05 level of significance, can we conclude the Middletown students stayed in their districts less time than the Brockton students? Use the five-step hypothesis testing procedure.
Compare and contrast internal and external validity. Describe and give examples of research questions for which external validity is a primary concern.
In order to estimate the proportion of families who prefer female baby-sitters to male baby-sitters with an error of at most 8 percentage points and with at least 95 percent confidence, how large a sample should be taken?
Stats Questions Set. Which of the following statements correctly compares the t -statistic to the z -score when creating a confidence interval?
What are the two ways of testing a correlation coefficient for significance?
Machine which fills quart milk cartons is set up to average 32.2 oz per carton, with standard deviation of 1.2 oz. Determine probability that filled carton will contain less than 32 oz of milk?
A large population of metal rods have an average diameter of .943 inches with a standard deviation of .001 inches. The engineering specification for the rods requires that they be between .941 and .944 inches.
Tavern has budget of $2,000 for beer for Super Bowl Sunday. Betty desires to find out number of gallons of each brand of beer to order so as to maximize profit. Create a linear programming model for this problem.
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