For a Selected Month,the Average Kilowatt Hours Used for 49 $\bar { x }$

question 81

Short Answer

For a selected month,the average kilowatt hours used for 49 residential customers showed that $\bar { x }$ is 1160 and s is 1085.Compute a 98% confidence interval estimate for the true mean.
____________________ to ____________________

---

Definitions:

Critical Value

A threshold in hypothesis testing that defines the boundary or cutoff for deciding whether to reject the null hypothesis, based on the observed data.

Significance Level

The probability threshold below which the null hypothesis is rejected in a statistical test.

P Value

The probability of obtaining test results at least as extreme as the results actually observed during the test, assuming that the null hypothesis is correct.

Type II Error

Occurs when a false null hypothesis is not rejected, indicating a failure to detect an effect or difference when one actually exists.