A survey of 62 students found that 33% were in favor of raising tution to build...
A survey of 62 students found that 33% were in favor of raising tution to build a new football stadium. The standard deviation of the sample proprortion is 8.9%. How large a sample (to the nearest person) would be required to reduce this standard deviation to 6.5%? Answer:
Homework Answers
Answer:
Given,
Standard deviation = 8.9
n = 62
To determine the sample size
Consider,
variance = p*q / n
8.9^2 = p*q / 62
79.21 = p*q / 62
p*q = 79.21*62
= 4911.02
pq = 4911.02
Now consider standard deviation = 6.5
6.5^2 = p*q / n
42.25 = 4911.02 / n
n = 4911.02 / 42.25
n = 116.2371598
n = 116
Sample size = 116
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A survey of 62 students found that 33% were in favor of raising
tution to build...
58 (1 point) A survey of 53 students found that 40% were in favor of raising...
58 (1 point) A survey of 53 students found that 40% were in favor of raising tution to build a new math building. The standard deviation of the sample proprortion is 7.8%. How large a sample (to the nearest person) would be required to reduce this standard deviation to 6.5%? Answer. I Preview My Answers Submit Answers You have attempted this problem 7 times Your overall recorded score is 0% You have unlimited attempts remaining ich O e
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