Hypothesis testing for mean
You must show your work:
1. Clearly state the sample mean, significance level, population, or sample standard deviation
2. Clearly state the null hypothesis and alternative hypothesis
3. Clearly state the test statistics and P-value
4. State if the significance test says you should reject the null hypothesis for the alternative or not.
5. Clearly state your conclusion
The manufacturer claims that your new car gets 26mpg on the highway. You suspect that the mpg is less for your car. The 69 trips on the highway that you took averaged 25.5mpg and the standard deviation for these 69 trips was 5.7mpg. What can be concluded at the α=0.05 level of significance?
a. For this study, we should use ______.
