1.50 5/9(122-32)=5/9(90)= 50
The confidence interval can be calculated from the margin of error, and vice versa,
The margin of error of the confidence interval is 2.156
The confidence interval is given as:

The formula of confidence interval is:

Where E represents the margin of error.
So, by comparison:

Multiply

Hence, the margin of error of the confidence interval is 2.156
Read more about margin of errors at:
brainly.com/question/13990500
Answer:
4
Step-by-step explanation:
3 x 4 = 12