You wish to test the following claim (H1H1) at a significance
level of α=0.05α=0.05.
Ho:μ=73.9Ho:μ=73.9
H1:μ≠73.9H1:μ≠73.9
You believe the population is normally distributed, but you do not
know the standard deviation. You obtain the following sample of
data:
data |
---|
86 |
74.3 |
81.7 |
80.5 |
90.3 |
75.7 |
79.7 |
85.7 |
69.9 |
What is the critical value for this test? (Report answer accurate
to three decimal places.)
critical value = ±±
What is the test statistic for this sample? (Report answer accurate
to three decimal places.)
test statistic =
The test statistic is...
This test statistic leads to a decision to...
As such, the final conclusion is that...
The statistical software output for this problem is :
critical value = ± 2.306
Test statistics = 3.050
The test statistic is in the critical region .
reject the null
There is sufficient evidence to warrant rejection of the claim that the population mean is
not equal to 73.9.
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