In: Statistics and Probability
A sample of 10 small bags of the same brand of candies was selected. Assume that the population distribution of bag weights is normal. The weight of each bag was then recorded. The mean weight was 2 ounces with a sample standard deviation s=0.2 ounces. We would like to calculate an 80% confidence interval for the average weight of a sample of size 10 .
tcrit=
to
Mean = 2
Sample size (n) = 10
Standard deviation (s) = 0.2
a)
b)
Confidence interval(in %) = 80
Degree of freedom = n - 1 = 9
c)
d)
Required confidence interval
Required confidence interval = (2.0-0.0875, 2.0+0.0875)
Required confidence interval = (1.9125, 2.0875)
Please hit thumps up if the answer helped you.