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1. What is the minimum reliability coefficient that researchers consider acceptable? Why do researchers use this minimum criterion for reliability?
2. For what kind of measure is it appropriate to examine test-retest reliability? Interitem reliability? Interrater reliability?
The mean monthly expenditure on gasoline per household in Middletown is determined by selecting a random sample of 36 households. The sample mean is $68 with a random sample standard deviation of $17.?Calculate a 90% confidence interval for the me..
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
Arnold Palmer and Tiger Woods are two of the best golfers to ever play the game. To show how these two golfers would compare if both were playing at the top of their game, the following data provide the results of 18-hole scores during the PGA tou..
You are running a chi-squared test. You have 2 groups with 3 characteristics each, what would your critical value be with an alpha of .025?
From the scenario, discuss two (2) areas of the United States economy that Ronald Reagan deregulated in the eighties. Explain at least two (2) methods the Reagan Administration used to deregulate these particular agencies or programs.
records indicate that on average 3.2 breakdowns per day occur on an urban highway during the morning rush hour.
In a compressed data file of 10,000 bytes, each byte is equally likely to be any one of 256 possible characters b0,..., b255 independent of any other byte. If Ni is the number of times bi appears in the file, find the joint PMF of N0,..., N255. Also,..
a mail order company is investigating the potential advantages of using a new heavy-duty packaging material. they
an opinion poll asks an srs of 100 college seniors how they view their job prospects. in all 53 say good. the plus four
Lisa shoots at a target. The probability of a hit in each shot is 1/2. Given a hit, the probability of a bull's-eye is p. She shoots until she misses the target. Let X be the total number of bull's-eyes Lisa has obtained when she has finished shoo..
Define the null hypothesis. If the null hypothesis is rejected then? Read the Z statistic from the normal distribution table:
At the 0.05 level of significance, is there evidence to suggest that the population mean waiting time to check out is less than 10.73 minutes?
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