This Question. The
A simple random sample of size nis drawn. The sample mean, x, is found to be 19.1, and the sample standard deviation, s, is found to be 4.4.
Click the icon to view the table of areas under the t-distribution.
(a) Construct a 95% confidence interval about us if the sample size, n, is 34
Lower bound Upper bound
(Use ascending order. Round to two decimal places as needed.)
(b) Construct a 95% confidence interval about if the sample size, n, is 51
Lower bound Upper bound:
(Use ascending order. Round to two decimal places as needed.)
How does increasing the sample size affect the margin of error, E?
O A The margin of error decreases
OB. The margin of error does not change
OC. The margin of error increases
In
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36
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