Question
The following information is available. H 0 : 220 H 1 : < 220 A sample of 64 observations is selected from a normal population.
| The following information is available. |
| H0: 220 |
| H1: < 220 |
| A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level. |
| a. | Is this a one- or two-tailed test? | ||
|
| b. | What is the decision rule?(Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.) |
| (Click to select)RejectDo not rejectH0whenz< |
| c. | What is the value of the test statistic?(Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) |
| Value of the test statistic |
| d. | What is your decision regardingH0? | ||
|
| e. | What is thep-value? |
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Introduction to Probability
Authors: Mark Daniel Ward, Ellen Gundlach
1st edition
716771098, 978-1319060893, 1319060897, 978-0716771098
