Given the hypothesis: H0: μ≥18 & Ha: μ<18, a random sample of five resulted in the following values: 17, 18, 20, 16, & 15. Using the .01 significance level, can we conclude the population mean is less than 18?
- Is this a Z or t test?
- Test statistic = ?
- Critical value = ?
- Reject Ho: (yes or no)