Ben Shaver
2021-12-30
habbocowji
Beginner2021-12-31Added 22 answers
Barbara Meeker
Beginner2022-01-01Added 38 answers
Step 1
Sample size
Sample mean
Standard deviation
we use t distibution as population standard deviation is unknown.
degree of freedom
Significance level,
cratical value
90% Confidence interval
The Two confidence intervals are (32.9, 34.5) and (32.1, 34.3)
The mean 33.2 is included in (32.9, 34.5)
The mean 33.7 is included in (32.1, 34.3)
So each confidence interval contains the mean of the other confidence interval.
karton
Expert2022-01-04Added 613 answers
Our t-statistic is less than 1.97. So,
We have to accept Noll Hypothesy
There is no difference brom the confidence interval brom the two Sample
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