The 95% confidence interval for the population mean $\mu$
,given that the sample size n = 49 and the population standard deviation $$\sigma = 7 \text {, is } \bar { X } \pm 1.96$$

Question

The 95% confidence interval for the population mean $\mu$ 
,given that the sample size n = 49 and the population standard deviation $$\sigma = 7 \text {, is } \bar { X } \pm 1.96$$

Quizplus · Accepted Answer

The formula for the 95% confidence interval is $\bar{X} \pm 1.96 \frac{\sigma}{\sqrt{n}}$. Plugging in the given values, we get $\bar{X} \pm 1.96 \frac{7}{\sqrt{49}} = \bar{X} \pm 1.96$.

The 95% Confidence Interval for the Population Mean μ\muμ ,Given That the Sample Size N = 49 and the That

The 95% Confidence Interval for the Population Mean $\mu$ ,Given That the Sample Size N = 49 and the That