7) Consider the following null and alternative hypothesis. Ho : p=120 versus H1 : µ> 120 A random sample of 81 observations taken from this population produced a sample mean of 123.5 and a sample standard deviation of 15. If this test is made at the 2.5% significance level, would you reject the null hypothesis? Solution: I. Statement of the Hypothesis: Но : H1 II. Statistical Test: III. Level of Significance and Critical Value:

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7) Consider the following null and alternative hypothesis.
Ho : u =120 versus H1 u > 120
A random sample of 81 observations taken from this population produced a sample mean of
123.5 and a sample standard deviation of 15. If this test is made at the 2.5% significance level, would you
reject the null hypothesis?
Solution:
I.
Statement of the Hypothesis:
Но
H1
II.
Statistical Test:
III.
Level of Significance and Critical Value:
IV.
Computed value of Z:
V.
Conclusion:
Transcribed Image Text:7) Consider the following null and alternative hypothesis. Ho : u =120 versus H1 u > 120 A random sample of 81 observations taken from this population produced a sample mean of 123.5 and a sample standard deviation of 15. If this test is made at the 2.5% significance level, would you reject the null hypothesis? Solution: I. Statement of the Hypothesis: Но H1 II. Statistical Test: III. Level of Significance and Critical Value: IV. Computed value of Z: V. Conclusion:
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