The average American consumes 94 liters of alcohol per year. Does the average college student consume less alcohol per year? A researcher surveyed 12 randomly selected college students and found that they averaged 87.6 liters of alcohol consumed per year with a standard deviation of 25 liters. What can be concluded at the the = 0.05 level of significance?

1. For this study, we should use Select an answer z-test for a population proportion t-test for a population mean
2. The null and alternative hypotheses would be:

H0:H0: ? p Select an answer < > =

H1:H1: ? p Select an answer > = <

1. The test statistic ? t z = (please show your answer to 3 decimal places.)
2. The p-value = (Please show your answer to 4 decimal places.)
3. The p-value is ? >
4. Based on this, we should Select an answer fail to reject accept reject the null hypothesis.
5. Thus, the final conclusion is that ...
   • The data suggest the population mean is not significantly less than 94 at = 0.05, so there is statistically insignificant evidence to conclude that the population mean amount of alcohol consumed by college students is equal to 94 liters per year.
   • The data suggest that the population mean amount of alcohol consumed by college students is not significantly less than 94 liters per year at = 0.05, so there is statistically insignificant evidence to conclude that the population mean amount of alcohol consumed by college students is less than 94 liters per year.
   • The data suggest the populaton mean is significantly less than 94 at = 0.05, so there is statistically significant evidence to conclude that the population mean amount of alcohol consumed by college students is less than 94 liters per year.