In a simple random sample of 1000 people taken from City A, 13% are senior citizens. In an independent simple random sample of 600 people taken from City B, 17% are senior citizens. Is the percent of senior citizens different in the two cities? Or is this just chance variation?

Answer in the steps described in Problems 7-9.

PROBLEM 7 (2 points possible)
Under the null hypothesis, the percent of senior citizens in each of the two cities is estimated to be ________ %.

13 13.5 14 14.5 15 15.5 16 16.5 17 17.5

Question

In a simple random sample of 1000 people taken from City A, 13% are senior citizens. In an independent simple random sample of 600 people taken from City B, 17% are senior citizens. Is the percent of senior citizens different in the two cities? Or is this just chance variation?

Answer in the steps described in Problems 7-9.

PROBLEM 7  (2 points possible)
Under the null hypothesis, the percent of senior citizens in each of the two cities is estimated to be ________ %.

13 13.5 14 14.5 15 15.5 16 16.5 17 17.5

anonymous · Answer

Calculate Pooled Estimated of p (p^)-lesson 3.4

anonymous · Answer

Do you know the correct answer of Problem 1?