Hypothesis Test for mu (when sigma is unknown
and n<40)
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When sigma is unknown, and n<40, you want to conduct a HT that
usest.
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To do this, enter your data into C1. Then go to Stat, Basic Statistics,
1 sample t.
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Your screen should look like this.
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Enter the value of mu in your hypothesis statement in the blank for test
mean.
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Now click on Options.
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Do not worry about the blank for the confidence level.
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Next pick the alternative that matches your alternative hypothesis.
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If you want a two sided test, select "not equal" as your alternative.
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If you want a one sided test, , select "less than" or "greater
than".
Note: Your screen may look a little different; however,
you should have the same boxes to fill in for Confidence and Alternative.
Your output may look like the following.
One-Sample T: C2
Test of mu = 6 vs mu not = 6
Variable N
Mean StDev SE Mean
C2
33 6.18
7.30 1.27
Variable
95.0% CI
T P
C2
( 3.59, 8.77)
0.14 0.888