Textbook ExpertVerified Tutor
10 Nov 2021
Given information
From the previous task, it is known that x=120, n=200, p=0.6. The confidence level is 95%
Step-by-step explanation
Step 1.
The formula for margin of error for a confidence interval is:
where is the probability of success and failure respectively where , is the sample size and is the critical z value for the required confidence level.
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