a. Calculate the correlation coefficient r for these data. b. At the 0.05 level of significance, test the claim that there is a significant linear correlation between the hours spent in studying and the exam score. Determine the coefficient of determination and interpret the result. c.

Q: х %3D 210, . = 9,100, y = 420, >v² = 32,200, ) 2 = 6, ху —D 12,70С

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A: 2) a) The slope is, b=n∑xy-∑x∑yn∑x2-∑x2=5×33974-409×4135×33643-4092=953934=1.020343≈1.0203 The…

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Q: Use the given data set to complete parts (a) through (c) below. (Use a = 0.05.) 10 13 12.74 6 12…

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Q: Based on the data shown below, calculate the correlation coefficient (rounded to three decimal…

A: Solution: x y x^2 y^2 x⋅y 3 28.55 9 815.1025 85.65 4 29.2 16 852.64 116.8 5 35.55 25…

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Q: b. What is the value of the correlation coefficient for this data set? Does the value ofr indicate…

A: b. The data is: Pollution(X) Cost of Medical Care(Y) 30 915 31.8 891 32.1 968 26.8 972…

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A: Given the data as x y 5 15 6 13.42 7 16.84 8 19.46 9 17.58 10 23.1 11 21.42 12…

Q: Calculate the correlation coefficient for the following data sets. y 51 2 38 4 54 1 33 4 64 55 1 28…

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Q: Estimate the correlation coefficient that would best describe the data below. O -0.4 0.4 0.9 -0.9

A: The correct option is (- 0.9) The detailed solution is as follows below:

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A: Given: ∑iX=261∑iY=280∑iXY=11573∑iX2=12991∑iY2=13528n=6

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Q: What is the correlation coefficient for this data set? r=

A: here given ,  the regression line equation   y = -74.19x + 47.89 so slope = -74.19 y- intercept  =…

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A: The correlation coefficient will lie between 0.6 - 0.8

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Q: b) Compute the Correlation Coefficient for your line from (a). c) Using your answer to (b), Is there…

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Q: coefficients

A: X y 58.5 -100.8 59.9 771.6 75 -1365.4 60.6 -660.3 66.8 1306.9 63.5 1061.3 57.8 -645.3…

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Q: Identify the type of correlation in the following scatter plot.

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Q: In baseball, is there a linear correlation between batting average and home run percentage? Let x…

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Q: Based on the data shown below, calculate the correlation coefficient (rounded to three decimal…

A: Let correlation coefficient is denoted by = r  And the total number = n

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Q: (a) Obtain a scatter plot of the 10 data points. (b) Find the value of the correlation coefficient…

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Q: In baseball, is there a linear correlation between batting average and home run percentage? Let x…

A: Given, In baseball, is there a linear correlation between batting average and home run percentage?…