For each sample, do a test for zero correlation. a. r = +.45, n = 20, α = .05, two-tailed test b. r = −.35, n = 30, α = .10, two-tailed test c. r = +.60, n = 7, α = .05, right-tailed test d. r = −.30, n = 61, α = .01, left-tailed test Find the critical value of tα. Perform the t test and report your decision. (Round your answers to 3 decimal places. Negative values should be indicated by a minus sign.) Sample t-calc t-crit decision a Ho b Ho c Ho d Ho

For each sample, do a test for zero correlation. a. r = +.45, n = 20, α = .05, two-tailed test b. r = −.35, n = 30, α = .10, two-tailed test c. r = +.60, n = 7, α = .05, right-tailed test d. r = −.30, n = 61, α = .01, left-tailed test Find the critical value of tα. Perform the t test and report your decision. (Round your answers to 3 decimal places. Negative values should be indicated by a minus sign.) Sample t-calc t-crit decision a Ho b Ho c Ho d Ho

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter9: Solving Quadratic Functions

Section: Chapter Questions

Problem 4CA

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Question

Find the critical value of tα. Perform the t test and report your decision. (Round your answers to 3 decimal places. Negative values should be indicated by a minus sign.)

Sample	t-calc	t-crit	decision
a				Ho
b				Ho
c				Ho
d				Ho

Definition Definition Relationship between two independent variables. A correlation tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

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