Question

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 1578 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.

99% of all confidence intervals would include the true proportion of traditional hogans.

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.

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.

Yes, the conditions are satisfied. This is important because it allows us to say that p̂ is approximately binomial.

No, the conditions are not satisfied. This is important because it allows us to say that p̂ is approximately normal.

No, the conditions are not satisfied. This is important because it allows us to say that p̂ is approximately binomial.

Yes, the conditions are satisfied. This is important because it allows us to say that p̂ is approximately normal.

Answer #1

The statistic software output for this problem is:

(a) Point estimate = 0.3082

(b)

Lower limit = 0.292

Upper limit = 0.325

99% of all confidence intervals would include the true proportion of traditional hogans.

(c)

Yes, the conditions are satisfied. This is important because it allows us to say that p̂ is approximately normal.

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 5200 permanent dwellings on an entire
reservation showed that 1578 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...

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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...

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in your calculations. Answers may vary slightly due to
rounding.
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(a) Let p be the proportion of all permanent dwellings
on the entire reservation that are traditional hogans. Find a point
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(b) Find a 99% confidence interval for p. (Round your
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places.)
(b) Find a 99% confidence interval for p. (Round your
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For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
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reservation showed that 1683 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...

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 5380 permanent dwellings on an entire
reservation showed that 1676 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...

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in your calculations. Answers may vary slightly due to
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