10. In one university, language professors incorporated a 10-week
extensive program to improve students’ Japanese reading
comprehension. The professors collected 262 books originally written
for Japanese children and required their students to read at least 40 of
them as part of the grade in the course. The books were categorized
into reading levels (color-coded for easy selection) according to
length and complexity. Complete parts a through c.
11. Use the relative frequency table shown to the right to calculate
the number of the 400 measurements failing into each of the
measurements classes. Then graph a frequency histogram for these
data.
12. Five banks have been ranked by the amount charged to credit and
debit cards issued by the banks. The table to the right gives the total
amount charged in 2007 for the top ranked banks.
13. Compare the z-scores to decide which of the x values below lie
the greatest above the mean and the greatest distance below the mean.
14. Consider the horizandal box plot shown to the right.
15. Educators are constantly eveluating the efficacy of public schools
in the education and training of tudents. One quantitative assessment
of change over time is the difference in scores on the SAT. The table
below contains the average SAT scores for 10 states for the years
1988 and 2005.
16. The mean gas mileage for a hybrid car is 56 miles per gallon.
Suppose that the gasoline mileage is approximately normally
distributed with a standard deviation of 3.2 miles per gallon.
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QNT 561 Week 2 Lab Work (New)
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