Consider the sample 68, 50, 66, 67, 52, 78, 74, 45, 63, 51, 62 from a normal population with population mean μ and population variance σ2. Find the 95% confidence interval for μ.
Please choose the best answer.
a)
61.45±7.14
b)
61.45±8.24
c)
61.45±4.67
d)
61.45±1.53
e)
61.45±3.55