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A researcher is interested in the proportion, of adults who use online banking. Of the 30 randomly sampled adults, 24 responded that they use online
A researcher is interested in the proportion, of adults who use online banking. Of the 30 randomly sampled adults, 24 responded that they use online banking. Assume the conditions are satisfied.SHOW YOUR WORKINGS.
A) Construct and interpret a 90% confidence interval.
B) What happens to the width of the 90% CI if the sample size was increased to 100 but the sample proportion remains the same at 80%? Briefly explain your answer.
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