A random sample of Midsize Sedans’ Miles per Gallon (mpg) wererecorded andthe                  data is listed below. Assume the miles per gallon are normallydistributed:
24.6Â Â Â Â Â 30.2Â Â Â Â Â 29.9Â Â Â Â Â 33.1Â Â Â Â Â 26.7
28.5Â Â Â Â Â 31.6Â Â Â Â Â 36.3Â Â Â Â Â 24.4Â Â Â Â Â 28.7
- Calculate the mean (1 pt):
- Calculate the standard deviation (1 pt):
- Construct a 90% confidence interval for population mean (4pts):
- Construct a 95% confidence interval for population standarddeviation (4 pts):
