Question
A sample of size n = 45 has mean x = 10.5 and standard deviation s = 14.3. i. Construct a 99% confidence interval for
A sample of size n = 45 has mean x = 10.5 and standard deviation s = 14.3. i. Construct a 99% confidence interval for . ii. Estimate the sample size needed so that a 99% confidenceinterval for will have a margin of error equal to 2.5. A) i. 4.4 < < 16.6 [Tech:4.5 < < 16.1] ii. 218 B) i. 4.4 < < 16.6 [Tech:4.5 < < 16.1] ii. 217 C) i. 4.7 < < 16.3 [Tech:4.8 < < 16.2] ii. 217
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Elementary Algebra Graphs And Authentic Applications
Authors: Jay Lehmann
2nd Edition
0321923472, 9780321923479
