Explore BrainMass

Explore BrainMass

    Statistics - Standard Deviation

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    A study examining the cost of living in urban versus rural areas was carried out in 1985. Two samples were drawn, and individuals recorded their household expenses over a three month period. Weekly averages and standard deviations show the following:

    Urban Rural
    mean = $83.50 = $71.10

    standard = 7.40 = 6.20
    deviation

    sample = 13 = 16
    size

    Is there a significant difference in rural/urban expenditures? (alpha = .01)

    © BrainMass Inc. brainmass.com June 3, 2020, 9:30 pm ad1c9bdddf
    https://brainmass.com/statistics/dispersion-and-spread-of-data/statistics-standard-deviation-expenses-185148

    Solution Preview

    The solution file is attached.

    (a) H0: 1 - 2 = 0 and Ha: 1 - 2 ≠ 0
    (b)  = 0.01
    (c) md = m1 - m2 = 83.50 - 71.10 = 12.40
    (d) S = ...

    Solution Summary

    The expert examines standard deviation expenses, Step-by-step solution is provided.

    $2.19

    ADVERTISEMENT