The confidence intervals is (100.86, 102.78) Calculate the mean and the margin of error.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $\overline{x}=101.82, \,\, \mu = 0.96$
$\bar x=\frac{\text{Lower Bound+Upper Bound}}{2}$
$=\frac{100.86+102.78}{2}=101.82$
$ME=\frac{\text{Upper Bound-Lower Bound}}{2}$
$=\frac{102.78-100.86}{2}=0.96$