8 points
6. Fourteen people were surveyed on how many hours they spent doing
the activitie...
Mathematics, 24.05.2020 05:58 leahstubbs
8 points
6. Fourteen people were surveyed on how many hours they spent doing
the activities below. Decide which descriptions at right can be said of
each activity.
0 2
12
14
8
Exercise (h)
0 2
4
10
12
6
Video games (h)
Exercise (hours)
Video games (hours)
Neither
Has an outlier
O
O
Is skewed
O
O
Is uniform
O
O
Has more than one
mode
O
Answers: 3
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Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to
Answers: 1
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