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1. What is meant by the reliability of a measure? Distinguish between true score and measurement error.
2. Describe the methods of determining the reliability of a measure.
3. Discuss the concept of construct validity. Distinguish among the indicators of construct validity.
In your research, you may find that you must compare the means of two sample populations related to one particular variable. For example, you may have population samples from two ethnic groups that you wish to compare against income level. In these c..
The drug is used on ten subjects and found to be successful in four out of the ten patients. What density should we now assign to the probability p? What is the probability that the drug will be successful the next time it is used?
Discuss how the wartime alliance between the Soviet Union and United States broke down in the post-war years leading up to the outbreak of war in Korea.
A researcher selected a sample of 50 residents from each of three different cities to determine if they were willing to participate in a medical experiment. At a = .05, test the claim that the proportions who will participate are equal.
Ages of 56 attendees of a Harry Potter movie are shown. (a) Form seven age classes (10 to 20, 20 to 30, etc.). Tabulate the frequency of attendees in each class.
the mean score on a physical fitness test for division i student-athletes is 947 with a standard deviation of 205. if
The top food snacks consumed by adults aged 18-54 are gum, chocolate candy, fresh fruit, potato chips, breath mints/candy, Ice cream, nuts, cookies, bars, yogurt, and crackers.
Develop a mathematical programming model and solve. Discuss your results [total profits, total costs, etc].
A consumer group claims that the mean running time for a certain type of flashlight battery is not the same as the manufacturer's claims. Determine the null and alternative hypotheses for the test described.
A truck without thelp from the truck driver (2hours per truck with the truck drivers help) Assuming M/M1:FCFS/8/8 model: What is the probability of 0,1 or 2 trucks in need of repair at any one time?
The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.
Explain the difference between an entity class and an entity instance, and give an example other than those used in the text or the lectures.
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