# Statistics - Confidence Interval

The following random sample from a population whose values were normally distributed was collected.

10 8 11 11

The 95% confidence interval for m is

a) 8.52 to 10.98

b) 7.75 to 11.75

c) 9.75 to 10.75

d) 8.00 to 10.00

https://brainmass.com/statistics/confidence-interval/statistics-confidence-interval-244536

#### Solution Preview

m = (10 + 8 + 11 + 11)/4 = 10

Deviations from m are d = {0, -2, 1, 1} and d^2 = {0, 4, 1, 1}

Sum(d^2) = ...

#### Solution Summary

The expert calculates the confidence interval in statistics. A complete, neat and step-by-step solution is provided.

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