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Question

GfK Roper Consulting gathers information on consumer preferences around the world to help companies monitor attitudes about health, food, and healthcare products. They requested people in many different cultures how they felt about the following statement: I try to avoid eating fast foods. In a random sample of 800 respondents, 411 people were 35 years old or younger, and, of those, 197 agreed ( completely or somewhat), with the statement. Of the 389 people over 35 years old, 246 people agreed with the statement.

b) Provide a 90% confidence interval for the difference in proportions.

Solution

VerifiedAnswered 1 year ago

Answered 1 year ago

Step 1

1 of 5**b)**

We have to calculate the $90\%$ confidence interval for the difference in proportions.

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