Question

The essay lengths of 29 randomly sampled essays are used to estimate the mean of the population. What t-score should be used to find the 95% confidence interval for the population mean? g

Answer 1

Answer:

A t-score of 1.701 should be used to find the 95% confidence interval for the population mean

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 29 - 1 = 28

Now, we have to find a value of T, which is found looking at the t table, with 28 degrees of freedom(y-axis) and a confidence level of 0.95($t_{95}$). So we have T = 1.701.

A t-score of 1.701 should be used to find the 95% confidence interval for the population mean