|
| H0, when z > evidence to conclude that the population mean is greater than 20. |
| e. |
What is the p-value? (Round your answer to 4 decimal places.) |
| p-value |
H0. The mean number of calls is than 36 per week. |
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| A United Nations report shows the mean family income for Mexican migrants to the United States is $27,300 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 20 Mexican family units reveals a mean to be $28,500 with a sample standard deviation of $9,651. Does this information disagree with the United Nations report? Apply the 0.01 significance level. |
| a. |
State the null hypothesis and the alternate hypothesis. |
|
|
| H0: μ = |
. This data the report. |
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| The following information is available. |
| 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? |
|
|
|
| H0 when z < H0. There is evidence to conclude that the population mean is greater than 10. |
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| Given the following hypotheses: |
| A random sample of 12 observations is selected from a normal population. The sample mean was 407 and the sample standard deviation 6. Using the .01 significance level: |
| a. |
State the decision rule. (Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.) |
| Reject H0 when the test statistic is the interval ([removed], [removed]). |
| b. |
Compute the value of the test statistic. (Round your answer to 3 decimal places.) |
| Value of the test statistic |
[removed] |
| c. |
What is your decision regarding the null hypothesis? |
|
|
|
| [removed] |
Reject |
| [removed] |
Do not reject |
|
|
|
