Based on past data, the producers of Ice Mountain bottled water knew that the proportion of people who preferred Ice Mountain to tap water was 0.773. To see how consumer perception of their product changed, they decided to conduct a survey. Of the 63 respondents, 46 indicated that they preferred Ice Mountain to the tap water in their homes. The 90% confidence interval for this proportion is ( 0.6382 , 0.8221 ). What is the best conclusion of those listed below?

options: 

1) The confidence interval does not provide enough information to form a conclusion.

2) We can claim that the proportion of consumers who prefer Ice Mountain to their tap water is smaller than 0.773.

3) We can not claim that the proportion of consumers who prefer Ice Mountain to their tap water differs from 0.773.

4) The proportion of consumers who prefer Ice Mountain is 0.773 with 90% confidence.

5) We can claim that the proportion of consumers who prefer Ice Mountain to their tap water is larger than 0.773.

Answer rating: 100% (QA)

Using the confidence interval 06382 08221 we can only determine that we ... View the full answer