Asked by Ben
In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to drink. Construct the 90% confidence interval for the proportion of all adults who feel the same way.
Answers
Answered by
MathGuru
Formula:
CI90 = p + or - 1.645(√pq/n)
Note: q = 1 - p
With your data:
CI90 = .93 + or - 1.645(√(.93)(.07)/1004)
I'll let you take it from here to finish the calculations.
CI90 = p + or - 1.645(√pq/n)
Note: q = 1 - p
With your data:
CI90 = .93 + or - 1.645(√(.93)(.07)/1004)
I'll let you take it from here to finish the calculations.
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