The equation for a 95% confidence interval is: ________.
A)$$\bar { X } \pm 1.960 \mathrm { X }$$
B)$$\bar { X } \pm 1.650 \mathrm { X }$$
C)$$\bar { X } = 1.65 \sigma _ { X } ^ { 2 }$$
D) A,B,C are incorrect

Question

Quizplus · Accepted Answer

The correct formula for a 95% confidence interval is $\bar{X} \pm 1.96 \frac{\sigma}{\sqrt{n}}$, where $\bar{X}$ is the sample mean, $\sigma$ is the population standard deviation, and $n$ is the sample size. None of the given options match this formula.

The Equation for a 95% Confidence Interval Is: ________ Xˉ±1.960X\bar { X } \pm 1.960 \mathrm { X }Xˉ±1.960X

The Equation for a 95% Confidence Interval Is: ________ $\bar { X } \pm 1.960 \mathrm { X }$