Question

Margin of Error Estimating Population Mean Practice
Complete this assessment to review what you’ve learned. It will not count toward your grade.
2 of 5


Sarah is doing research, and she estimated the population mean using six random samples. Sarah accidentally erased one of the sample means. What is the missing sample mean if the estimated population mean is 4.2 and the sample means are 4.8, 3.2, 4.6, 5.3, 3.9?(1 point)
The missing sample mean is
.

Answer 1

3.4

Work: 6 × 4.2 = 25.2 total. Sum of given means = 4.8+3.2+4.6+5.3+3.9 = 21.8. Missing = 25.2 − 21.8 = 3.4.