An environmentalist suggests that the median number of days per month that a particular city failed to
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Question:
An environmentalist suggests that the median number of days per month that a particular city failed to meet the EPA acceptable standards for clean air is 11 days. After taking a random sample of 20 months, the number of days that the air quality was below the EPA’s standards were recorded each month and the following output was produced to determine if the environmentalist’s suggestion was correct.
One-sample Sign-Test data: Days alternative hypothesis: true median is not equal to 11 95 percent confidence interval: 3.232941 15.883529 |
Based on the output, what is your decision and what can you conclude at a 1% significance level?
Reject Ho, concluding that the medium number of days with unclean air is not 11
- Fail to reject Ho, concluding that the medium number of days with unclean air is 11
- Fail to reject Ho, concluding that the medium number of days with unclean air is not 11
- Not enough information given
Expert Answer:
The given output is Onesample SignTest data Days alternative hypothesis true median is not equa... View the full answer
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