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A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Average Temperature and Precipitation
The average normal daily temperature (in degrees Fahrenheit) and the
corresponding average monthly precipitation (in inches) for the month of June
are shown here for seven randomly selected cities. Determine if there is a
relationship between the two variables.
Avg. daily temp. x
Avg. mo. precip. y
86
81
83
89
80
74
64
3.4
1.8
3.5
3.6
3.7
1.5
0.2
a.
Construct a scatter plot for the data obtained.
b. Compute the value of the correlation coefficient.
Test the significance of the correlation coefficient using t-test. Use a = 0.05. If
significant, answer d and e.
d. Find the equation of the regression line for the data and graph the line on the scatter
plot.
Make a prediction of the average monthly precipitation if the average daily temperature
is 70°F.
C.
e.
Transcribed Image Text:Average Temperature and Precipitation The average normal daily temperature (in degrees Fahrenheit) and the corresponding average monthly precipitation (in inches) for the month of June are shown here for seven randomly selected cities. Determine if there is a relationship between the two variables. Avg. daily temp. x Avg. mo. precip. y 86 81 83 89 80 74 64 3.4 1.8 3.5 3.6 3.7 1.5 0.2 a. Construct a scatter plot for the data obtained. b. Compute the value of the correlation coefficient. Test the significance of the correlation coefficient using t-test. Use a = 0.05. If significant, answer d and e. d. Find the equation of the regression line for the data and graph the line on the scatter plot. Make a prediction of the average monthly precipitation if the average daily temperature is 70°F. C. e.
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