Suppose I recorded the attendance of my students in a recent statistics class because I wanted to
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Suppose I recorded the attendance of my students in a recent statistics class because I wanted to investigate the relationship between the number of classes they missed and their final grades. The following table shows the data for a random sample of nine students. These data can also be found in the Excel file missed classes.xlsx.
Missed Final Missed Final Classes Grade Classes Grade 4 74 2 84 6 79 0 90 1 93 5 86 4 70 2 95 0 96
a. Calculate the Spearman rank-order correlation coefficient.
b. Perform a hypothesis test to determine if the population rank correlation coefficient is less than zero using a = 0.05.AppendixLO1
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