The maximum distance at which a highway sign can be read is determined for a sample of young people and a sample of older people. The mean d

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The maximum distance at which a highway sign can be read is determined for a sample of young people and a sample of older people. The mean distance is computed for each age group. What’s the research hypothesis about the means of the two groups?

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Orla Orla 4 years 2021-09-03T19:48:02+00:00 1 Answers 21 views 0

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  1. minhkhang
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    2021-09-03T19:49:06+00:00
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    Answer:

    The population mean are the same

    Explanation:

    Answer:

    The population means are the same.

    Explanation:

    The hypotheses for a difference in two population means are similar to those for a difference difference two population proportions.

    At null point, Ha=0

    Let the mean population of the young one be u1

    Let the mean population of the old one be u2.

    Then, the difference between their mean population distance is given as

    Ha=u2-u1

    Since, Ha is null point, Ha=0

    0=u2-u1

    u2=u1

    This shows that the mean population distance of the old is equal to the mean population distance of the young.

    Therefore their mean population distance is the same

    Since it is null alternative then, the population mean are the same.

    We must sample the population using

    1. Samples must be random to remove or minimize bias.

    2. Sample must be representative of the populations in question.

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