Answer:
95% confident the population mean is between (9.1,9.9)
Step-by-step explanation:
We are given the following data set:
9.3, 9.7, 9.2, 9.7
Formula:
where
are data points,
is the mean and n is the number of observations.


Sum of squares of differences = 0.2075

95% Confidence interval:
Putting the values, we get,
Answer:
I do not understand the question please ask a question before sending that
Since the sign is greater than or equal too T can be 2 or anything less.
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