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Problems Equations
Find the margin of error for the 95% confidence interval used to estimate the population proportion. n =169, x=107
The range of possible values for the Spearman correlation is from +1.00 to -1.00. True or False?
A researcher is using a chi square test to determine whether there are any preferences among four brands of cola. With alpha = 0.05 and a sample of n=30, the critical region for the hypothesis test would have a boundary of: a) 7.81 b)9.49 c)42.56 d)43.77 Please help do not know how to do this. Thanks
A basic assumption for a chi-square hypothesis is: a) the population distribution(s) must be normal b) the scores must come from an interval or ratio scale c) the observations must be independent d) all of the above I think the answer is d) but I am not sure. Thanks
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