IGURE 20 Example 20 Lour chPod Online Resources The of testi

IGURE 20 Example 20 Lour chPod Online Resources The of testing. StatBoards video, Carrying Out a One-Sample t Test, discusses examples Apply Your Knowledge 20.8 Is It Significant? The one-sample t statistic for testing Ho: = 0 1.75. rom a sample of n = 25 observations has the value t

Solution

Here,

n = 25

t = 1.75

For a right tailed test.

a)

Thus,

df = n - 1 = 24 [ANSWER]

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b)

As we can see from the table, at df = 24, out t =1.75 is bracketed by 0.05 and 0.025. [ANSWERS: 0.025 AND 0.05]

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c)

As 0.025 < P < 0.05, then

Yes, it is significant at 0.10 level.

Yes, it is significant at 0.05 level.

No, it is not significant at 0.01 level.

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d)

Using technology, we have

P = 0.046447544 [ANSWER]