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What will you use for a statistical test in this case

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Reference no: EM131833920

1. A researcher wishes to know if the mean performance of all students in this city differs significantly from that of 4,000 students described in the test manual. What will you use for a statistical test in this case?

a) A z score

b) A t score

c) Neither

2. A researcher carefully computes the correlation coefficient between two variables and gets r = 1.23. What does this value mean?

Reference no: EM131833920

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