Use the following information for questions:
A 95% confidence interval for p the proportion of supermarket customers who do not buy house-brand products at all is calculated and turns out to be: (0.18, 0.46).
-There is a 95% probability that the population proportion of supermarket customers who do not buy house-brand products at all lies between 18% and 46%.

Question

Use the following information for questions:
 A 95% confidence interval for p the proportion of supermarket customers who do not buy house-brand products at all is calculated and turns out to be: (0.18, 0.46).
-There is a 95% probability that the population proportion of supermarket customers who do not buy house-brand products at all lies between 18% and 46%.

Quizplus · Accepted Answer

A 95% confidence interval means that if we were to take many samples and calculate a confidence interval for each, we would expect 95% of those intervals to contain the true population proportion. It does not mean there is a 95% probability that the true population proportion lies within any given interval.

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