Astatistic instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and weighed the bags. they weighed 9.3, 9.7, 9.2, and 9.7 pounds. assume that the distribution of the weights is normal. find a 95% confidence interval for the mean weight of all bags of oranges.

we are 95% confident the population mean is between and

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,  

a

step-by-step explanation:

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