Question
A sample of 40 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 5. Conduct the
| A sample of 40 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 5. Conduct the following test of hypothesis using the .05 significance level. |
| H0: 25 |
| H1: > 25 |
| (a) | Is this a one- or two-tailed test? | ||
|
| (b) | What is the decision rule?(Round your answer to 2 decimal places.) |
| (Click to select)Do not rejectRejectH0,when z > |
| (c) | What is the value of the test statistic?(Round your answer to 2 decimal places.) |
| Value of the test statistic |
| (d) | What is your decision regardingH0? | ||
|
| There is(Click to select)insufficientsufficientevidence to conclude that the population mean is greater than 25. |
| (e) | What is the p-value?(Round your answer to 4 decimal places.) |
| p-value |
|
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Linear Algebra A Modern Introduction
Authors: David Poole
4th edition
1285463242, 978-1285982830, 1285982835, 978-1285463247
