# A random sample of 16 students showed an average age of 25 years and a standard deviation of 2 years. The 98% confidence interval for the true average age of students is what?

##### 1 Answer

Jan 26, 2016

The **standard error** of the sampling distribution of means is:

s.e.

#### Explanation:

Next, use the **Standard Normal table** to find the **lower** and **upper** limits for a **total area** under the curve equal to

**standard deviations**

Lastly, the **confidence interval** will be centered at the mean

C.I.

hope that helped