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An amateur researcher believes that the number of books owned is correlated with emotional intelligence (EQ). She randomly surveys 100 women and 100 men and finds r = .22. What does she conclude?
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
What is a nonparametric test and what is a parametric test - If the Kruskal-Wallis test is to be used with the data in the above exercise, the samples should be simple random samples. What is a simple random sample?
a national magazine claims that the average college student watches less tv than the general public. the national
In a study of a lake's fish population, scientists capture fish from the lake, then tag and release them. Suppose that over a period of five days.
Check the assumptions and conditions for inference on proportions. If it's appropriate, find a 90% confidence interval for the proportion of WBCs that receive SBA funding. If it's not ap- propriate, explain and/or recommend an alternative action.
jude is interested in buying a digital camera. he visited 9 stores at random and recorded the price of the particular
Iif the sample consits of 16 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? use a two tailed test with .05.
With player skill level as a blocking variable, use the 0.025 level of significance in determining whether the treatment effects of the five racquets could all be zero. Using the 0.01 level, evaluate the effectiveness of the blocking variable.
You are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is:
part 1shown below are the sales revenue and advertising cost data for seven companies published by international
question 5 cards are dealt from a well shuffled deck. you get 2 for each ace in your hand but pay 1 for the privilege
For a one tailed hypothesis test (upper tail), the p-value is computed to be 0.034. If the test is being conducted at a 95% confidence, the null hypothesis.
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