Chi-square test for goodness of fit
A chi-square test for goodness of fit is used in a situation with n = 60 subjects distributed over three categories. The df value for this test is.
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Find the expected value (in dollars) of the amount won by one entry. Find the expected value (in dollars) if the cost of entering this sweepstakes is the cost of a postage stamp (34 cents)
The mean and standard deviation on a calculus mid term are 66 and 19 points while they are 72 and 15 on the final. If a student gets 75 points on the midterm, what is the comparable grade on the final?
A student takes a calculus midterm and a history midterm. The mean and standard deviation on the calculus midterm are 58 and 15 points while they are 63 and 35 on the history midterm. Suppose she gets 78 on the calculus midterm and 78 in history.
If the alpha level is increased from a = .01 to a = .05, what happens to the size of the critical region.
Assume that matched pairs of data result in the given number of signs when the value of the second variable is subtracted from the corresponding value of the first variable. Use the sign test with a 0.05 significance level to test the null hypothe
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 956 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.78 hours with a standard deviatio
What is the test value for a test of the difference between these two population proportions?
What theorem states that a distribution of sample means is approximately normally distributed if the sample size is large enough?
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