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    Regression analysis

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    Dear OTA,

    Can you please assist me with this? Please see the attached file.

    Thanks

    You are given the following summary statistics from a regression analysis:

    ŷ = 200 + 150x

    SSE = 25.25
    _
    SSX = Sum of squares X = (x -x) 2 = 99.645

    n = 18
    _
    x = 52.0

    a. Determine the point estimate for y if xp = 48 is used.
    b. Provide a 95% confidence interval estimate for the average y, given xp = 48. Interpret this interval.
    c. Provide a 95% prediction interval estimate for the average y, given xp = 48. Interpret this interval.
    d. Discuss the difference between the estimates provided in parts b and c.

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    https://brainmass.com/statistics/regression-analysis/summary-statistics-regression-analysis-197703

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    You are given the following summary statistics from a regression analysis:
    ŷ = 200 + 150x, SSE = 25.25 SSX = Sum of squares X = (x -x) 2 = 99.645

    n = 18 xbar = 52.0

    a. Determine the point estimate for y if xp = 48 is used.

    When xp=48
    ŷ = 200 + 150*48=7400

    b. Provide a 95% confidence interval estimate for the average y, given xp = ...

    Solution Summary

    Step by step method for regression analysis is discussed here. Regression coefficients, coefficient of determination, scatter diagram and significance of regression model are explained in the solution.

    $2.19

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