A 90% confidence interval and a 96% confidence interval are computed from the same set of data. Which of the following statements is correct?
| a. The intervals have the same width. | | |
| b. The 90% confidence interval is wider. | | |
| c. The 96% confidence interval is wider. | | |
| d. You need to know the sample size, n, and the standard deviation to determine which interval is wider. | | |
96% confidence interval is wider than 90% confidence interval because in 96% we include more pausible values than in 90% confidnce interval. So statement (a) and (b) are false.
And statement (c) is correct.
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