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Jill constructs a test to measure a personality state. The test consists of multiple items which sum up to indicate the degree of the trait that is present. It is important to note that Jill is measuring a state that is quite variable. Which measure of reliability would be LEAST appropriate for assessing the adequacy of her test?
A. Split half
B. Test-retest
C. Cronbach Alpha
D. Kuder-Richardson 20
There are 40 English students enrolled. The teacher questioned 5 students who always sit in the back of the classroom. Three of the 5 said "yes" when asked if they would like "A Tale of Two Cities" as the next class reading assignment.
Compare among expected monetary approach also expected utility approach. Sketch the brokers utility curve and describe what it says about her risk profile.
An old saying in golf is "you drive for show and you putt for dough." The point is that good putting is more important than long driving for shooting low scores and hence winning money.
The Republican party is interested in studying the number of Republicans that might vote in a particular Congressional district. Assume that the number of voters is binomially distributed by party affiliation (either Republican or not Republican).
According to the empirical rule, if the data from a "bell-shaped" normal distribution ______ percent of the observation will be contained between 2 standard deviations below the mean and 2 standard deviations above the mean.
How do we use a least squares regression line? What is the range for the coefficient of determination?
A City Survey states that 70 percent of all business owners favor increasing the parking fees. The city has commissioned a random sample of n = 100 business owners.
What happens to the confidence interval if you (a) increase the confidence level, (b) increase the sample size, or (c) increase the margin of error?
Find the sample space for the number of outcomes (you don't need to list the possible outcomes, just how many possible outcomes there are).
How does the bell-shaped curve for the sampling distribution of sample means for samples of size n = 100 compare to the bell-shaped curve for sampling distribution of sample means for samples of size n = 60.
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a one sample or two sample test?
Using a test, 80% of Down's Sydrome cases can be identified, while 5% of normals are detected as positive. What is the sensitivity and specificity of the test?
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