Statistics Chapter 10 Exam Questions And Answers 100% Pass
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Course
Statistics
Institution
Statistics
Statistics Chapter 10 Exam Questions And
Answers 100% Pass
If we find that there is a linear correlation between the concentration of carbon dioxide in our
atmosphere and the global temperature, does that indicate that changes in the concentration
of carbon dioxide cause changes in the global t...
Statistics Chapter 10 Exam Questions And
Answers 100% Pass
If we find that there is a linear correlation between the concentration of carbon dioxide in our
atmosphere and the global temperature, does that indicate that changes in the concentration
of carbon dioxide cause changes in the global temperature? - answer✔No. The presence of a
linear correlation between two variables does not imply that one of the variables is the cause of
the other variable.
For a sample of eight bears, researchers measured the distances around the bears' chests and
weighed the bears. Minitab was used to find that the value of the linear correlation coefficient
is
r =0.996 Using α=0.05,
determine if there is a linear correlation between chest size and weight. What proportion of the
variation in weight can be explained by the linear relationship between weight and chest size?
Critical Values for the Coefficient
n a=0.05 a=0.01
4 0.950 0.990
5 0.878 0.959
6 0.811 0.917
7 0.754 0.875
8 0.707 0.834
9 0.666 0.798
10 0.632 0.765
NOTE: To test Ho:p=0, against H1:p# 0, reject - answer✔A.)Yes, because the absolute value of
the test statistic exceeds the critical value of 0.707.
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