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You want to determine whether or not there is a significant relationship between IQ and eye-hand...

You want to determine whether or not there is a significant relationship between IQ and eye-hand coordination. You obtain scores for the 62 students in a university class on both an IQ test and an eye-hand coordination test.

(a) State the null hypothesis.

(b) Given the number of students in your study, what is the tabled value of r for significance at the .05 error (95% confidence) level? Use a two-tailed test.

(c) Assume that you calculate a Pearson r between the two test scores and find that r = .48. Interpret this result at a two-tailed .05 error level: Is there a significant relationship between IQ and eye-hand coordination? (yes, no, or not enough information to tell) Explain.

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