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1. What is meant by the sensitivity of a dependent measure? What are ceiling and floor effects?
2. What are demand characteristics? Describe ways to minimize demand characteristics.
3. What is the reason for a placebo group?
Using test data on 20 types of laundry detergent, an analyst fitted a regression to predict CostPerLoad (average cost per load in cents per load) using binary predictors.
Obtain a number of tables, charts and diagrams used to describe quantitative information. Sources could include, for example, newspaper cuttings, building society pamphlets, textbooks or web search.
Determine the binomial distribution for any random data. Also determine the probability greater than 4.
An urn contains four balls numbered 1, 2, 3, and 4. If two balls are drawn from the urn at random (that is, each pair has the same chance of being selected) and Z is the sum of the numbers on the two balls drawn, find
Give a direct proof that the sum an even integer and an odd integer is odd. Hint: Start by letting m be an even integer and letting n be an odd integer.
A survey on the drinking habits of Americans estimated the percentage of adults across the country who drink beer, wine, or hard liquor at least occasionally. Of the 1516 adults interviewed, 985 said that they drank.
The sensitivity of a test is the probability that a person having the disease will test positive (indicating the person has the disease, i.e., it's the probability the test will pick up the fact that a person has the disease).
Suppose distinct values are written on each of three cards, which are then randomly given the designations A, B, and C . The values on cards A and B are then compared. What is the probability that the smaller of these values is also smaller than t..
suppose a study of 196 randomly sampled privately insured adults with incomes over 200 of the current poverty level is
In considering doing a logistic regression using the Enter method, it was suggested that I may want to consider doing a sequential LSR or stepwise logistic regression instead.
Can you conclude that every one-bedroom apartment costs less than every two-bedroom apartment? Which is more useful to someone planning to rent an apartment, the confidence interval or the significance test?
you are trying to create a budget to optimize the use of a portion of your disposable income. you have a maximum of
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