Reference no: EM132461613

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.

A random sample of 5120 permanent dwellings on an entire reservation showed that 1592 were traditional hogans.

(a) Let p be the proportion of all permanent dwellings on the entire reservation that are traditional hogans. Find a point estimate for p. (Round your answer to four decimal places.)

________?

(b) Find a 99% confidence interval for p. (Round your answer to three decimal places.)

lower limit    _______ ?

upper limit    _______?

Give a brief interpretation of the confidence interval.

Choices:

• 99% of the confidence intervals created using this method would include the true proportion of traditional hogans.
• 1% of all confidence intervals would include the true proportion of traditional hogans.    
• 99% of all confidence intervals would include the true proportion of traditional hogans.
• 1% of the confidence intervals created using this method would include the true proportion of traditional hogans.

(c) Do you think that np > 5 and nq > 5 are satisfied for this problem? Explain why this would be an important consideration.

Choices:

• No, the conditions are not satisfied. This is important because it allows us to say that p^ is approximately binomial.
• Yes, the conditions are satisfied. This is important because it allows us to say that p^ is approximately normal.    
• No, the conditions are not satisfied. This is important because it allows us to say that p^ is approximately normal.
• Yes, the conditions are satisfied. This is important because it allows us to say that p^ is approximately binomial.