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x= 53 n=217 sigma o= 7 confidence =99% The confidence interval is from to b. Obtain...

x= 53 n=217 sigma o= 7 confidence =99%

The confidence interval is from to

b. Obtain the margin of error by taking half the length of the confidence interval.

What is the length of the confidence​ interval?

c. Obtain the margin of error by using the formula E=z(a/2) x o/ square root of n

Identify the critical value.

What is the margin of error obtained using the methods of parts​ (b) and​ (c)?

Math   Statistics-And-Probability   
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