Question
A random sample of 11 items is drawn from a population whose standard deviation is unknown. The sample mean is x x = 810 and
A random sample of 11 items is drawn from a population whose standard deviation is unknown. The sample mean is x
x = 810 and the sample standard deviation is s = 20. Use Appendix D to find the values of Student's t.
(a) Construct an interval estimate of with 98% confidence.(Round your answers to 3 decimal places.)
The 98% confidence interval is from Not attempted
to Not attempted
(b) Construct an interval estimate of with 98% confidence, assuming that s = 40. (Round your answers to 3 decimal places.)
The 98% confidence interval is from Not attempted
to Not attempted
(c) Construct an interval estimate of with 98% confidence, assuming that s = 80. (Round your answers to 3 decimal places.)
The 98% confidence interval is from Not attempted
to
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Big Ideas Math A Common Core Curriculum Blue
Authors: Ron Larson, Laurie Boswell
1st Edition
1608402282, 978-1608402281
