Please analyze the following problems in JMP and answer the questions below.Numerous studies have shown that watching to...

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Numerous studies have shown that watching

April 14, 2018

Please analyze the following problems in JMP and answer the questions below.

Numerous studies have shown that watching too much television hurts children’s school
grades. Others have argued that television is not necessarily a bad thing for children
(Mail Online; July 2009). Like books and stories, television not only entertains, it also
exposes a child to new information about the world. While watching too much TV is
harmful, a little bit may actually help. Suppose a researcher gathers information on the
grade point average (GPA) of 28 middle school children and the number of hours of TV
they watch per week.
GPA

Hours TV

3.24
3.1
3.24
2.61
3.03
3.37
1.6
3.2
2.96
2.18
2.5
2.95
2.72
3.05
3.45
2.49
3.62
2.33
2.36
3.28
3.35
2.64
2.88
2.02
2.6
3.18
3.31

19
21
18
30
23
10
36
10
13
31
33
4
25
21
8
27
11
29
30
10
15
18
24
29
22
21
4

a) Estimate a quadratic regression model where the GPA of middle school is the response,
and the two predictors are hours of TV and (hours of TV)^2
b) Is the quadratic term in this model justified? Explain.
c) Based on this data, find the optimal number of weekly hours of TV for middle school
children.
d) Are there any high leverage values in this data set? If so, list which observations are high
leverage (don’t delete them, just list them)










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