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Percentages of public school students in fourth grade in 1996 and in eighth grade in 2000 who were at or above the pro?cient level in mathematics were given in the article "Mixed Progress in Math" (USA Today, August 3, 2001) for eight western states:
State 4th grade (1996) 8th grade (2000)
Arizona
15
21
California
11
18
Hawaii
16
Montana
22
37
New Mexico
13
Oregon
32
Utah
23
26
Wyoming 19 25
a. Construct a scatterplot, and comment on any interesting features.
b. Find the equation of the least-squares line that summarizes the relationship between x 5 1996 fourth- grade math pro?ciency percentage and y 5 2000 eighth-grade math pro?ciency percentage.
c. Nevada, a western state not included in the data set, had a 1996 fourth-grade math pro?ciency of 14%. What would you predict for Nevada's 2000 eighth- grade math pro?ciency percentage? How does your prediction compare to the actual eighth-grade value of 20 for Nevada?
consider the following frequency distributionnbsp nbsp nbsp nbsp classes nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp
cleanauto inc. has four workers julie ian devon and thomas. cleanauto inc. provides two services interior vacuuming
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