Assignment:
Finding Critical r-Values The critical r values of Table A-6 are found by using the formula
r= t/√t2 + n -2
where the t value is found from Table A-3 assuming a two-tailed case with n -2 degrees of freedom. Table A-6 lists the results for selected values of n and a. Use the formula for r given here and Table A-3 (with n -2 degrees of freedom) to find the critical r values for the given cases.
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a. H1 :
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ρ ≠ 0, n = 47, α = 0.05
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b. H1 :
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ρ ≠ 0, n = 102, α = 0.01
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c. H1 :
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ρ < 0, n = 72, α = 0.01
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d. H1 :
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ρ > 0, n = 72, α =0.01
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