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    Alpha Equal

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    Question 1
    Assume that a sample of n pairs of data results in the given value of r. For alpha equal .05, determine if there is a significant linear relationship between x and y. Let n = 22, r = -0.087.

    Question 2
    Assume that a sample of n pairs of data results in the given value of r. For alpha equal .05, determine if there is a significant linear relationship between x and y. Let n = 40, r = -0.299.

    Question 3
    Given the following ordered data pairs (x, y), compute the value of the linear correlation coefficient r: (2,6) (3,0) (5,15) (5,5) (10,2).

    Question 4
    Given the following ordered pairs (x, y): (5,-2) (3,0) (2,1) (1,2) (0,3) (2,1), compute the equation of the regression line.

    Question 5
    A Pearsons Correlation coefficient between college entrance exam grades and scholastic achievement was computed on a very sophisticated computer program to be -1.08. The USAF has asked you to comment on the researchers methodology and findings. On the basis of your brief study, you would tell the USAF that:
    A. The entrance exam is a good predictor of success.
    B. They should hire a new statistician.
    C. The exam was a good test.
    D. Students who do best on this exam will become the worst students.
    E. Students as this school are underachieving.

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    https://brainmass.com/statistics/linear-regression/alpha-equal-26201

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    Solution Summary

    Question 1
    Assume that a sample of n pairs of data results in the given value of r. For alpha equal .05, determine if there is a significant linear relationship between x and y. Let n = 22, r = -0.087.

    Question 2
    Assume that a sample of n pairs of data results in the given value of r. For alpha equal .05, determine if there is a significant linear relationship between x and y. Let n = 40, r = -0.299.

    Question 3
    Given the following ordered data pairs (x, y), compute the value of the linear correlation coefficient r: (2,6) (3,0) (5,15) (5,5) (10,2).

    Question 4
    Given the following ordered pairs (x, y): (5,-2) (3,0) (2,1) (1,2) (0,3) (2,1), compute the equation of the regression line.

    Question 5
    A Pearsons Correlation coefficient between college entrance exam grades and scholastic achievement was computed on a very sophisticated computer program to be -1.08. The USAF has asked you to comment on the researchers methodology and findings. On the basis of your brief study, you would tell the USAF that:
    A. The entrance exam is a good predictor of success.
    B. They should hire a new statistician.
    C. The exam was a good test.
    D. Students who do best on this exam will become the worst students.
    E. Students as this school are underachieving.

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