SOLUTION: A survey of 300 fatal accidents showed that 123 were alcohol related. Find the point estimate for the population proportion, the margin of error for a 98% confidence and then cons
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Question 269644: A survey of 300 fatal accidents showed that 123 were alcohol related. Find the point estimate for the population proportion, the margin of error for a 98% confidence and then construct to the 98% confidence interval for the population proportion p.
a. Find the margin of error E.
Round E to three decimal places
b. Construct a 95% confidence interval for the population proportion p of all Twinkle bulbs.
You can put this solution on YOUR website! A survey of 300 fatal accidents showed that 123 were alcohol related.
Find the point estimate for the population proportion,
Ans: 123/300 = 0.41
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the margin of error for a 98% confidence
E = invNorm(0.99)sqrt(0.41*0.59/300) = 2.3263*0.284 = 0.0661
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and then construct the 98% confidence interval for the population proportion p.
CI: 0.41-0.0661 < p < 0.41+0.0661
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Follow the procedure above to answer "a" and "b" below.
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cheers,
Stan H.
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a. Find the margin of error E.
Round E to three decimal places
b. Construct a 95% confidence interval for the population proportion p of all Twinkle bulbs.
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