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11 June, 17:44

An educational psychologist wants to test whether a new teaching method makes a difference to reading comprehension scores using a significance level of 0.01. The mean reading comprehension scores of students using the old method has a value of 46.3. Assume scores in the population are distributed normally. State the Null and Alternative Hypotheses.

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  1. 11 June, 18:16
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    Answer: H' : u = 46.3,

    H1: u > 46.3

    H1: u < 46.3

    H1: u ≠ 46.3

    Step-by-step explanation: Let H' represents the null hypothesis and H1 represents the alternative hypothesis.

    "The mean reading comprehension scores of students using the old method has a value of 46.3"

    Above is the initial claim or assertion about the mean reading comprehensive scores of students.

    This is the null hypothesis.

    It can be written as

    H' : u = 46.3

    Where u = population mean.

    The alternative hypothesis is a claim in opposition to the null hypothesis.

    Hence the possible alternative hypothesis to the null will be

    H1: u > 46.3 (upper tailed)

    H1: u < 46.3 (lower tailed)

    H1: u ≠ 46.3 (two tailed)
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