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Body masses were measured for five female and five male adult Anolis lizards. Test the hypothesis of no difference in mean body mass of females and males versus the alternative that a difference exists. Use a 5% level of significance. Body Mass (g):
Females 55,49,60,51,56 and for Males the weights are: 54,50,45,47,51

  • Statistics - ,

    Try an independent groups t-test. This will be a two-tailed test because the problem is asking if there is a difference, which could be in either direction.

    Ho: µ1 = µ2 (1 = females; 2 = males)
    Ha: µ1 ≠ µ2

    Compare the test statistic you calculate with .05 level of significance for a two-tailed test using a t-table.
    Degrees of freedom = n1 + n2 - 2

    I'll let you take it from here.

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