Concept explainers
a.
Draw a stem-and-leaf display for the number of books read by the students.
b.
Locate the leaves in the display that corresponds to students who earned an A grade in the course.
Explain the inference that can make about these students.
c.
Obtain and interpret the
d.
Explain the skewness of the distribution based on the values of mean and median.
e.
Find and interpret the mean and standard deviation of the number of books read by the students who earned an A grade.
f.
Find and interpret the mean and standard deviation of the number of books read by the students who earned either a B or C grade.
g.
Find the students in the two groups who have more variable distribution for the number of books read.
h.
Obtain and interpret the z-score for an A grade student who read 40 books.
i.
Find and interpret the z-score for a B or C student who read 40 books.
j.
Identify the group that is more likely to have read 40 books.
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