MATH 1342 Name
Lab 12 - Ch.10 - Hypothesis Testing
Critical Thinking: Communication Skills: Empirical/Quantitative Skills
2. A machine is designed to fill jars with 16 ounces of coffee. A quality control Inspector
suspects that the machine is not filling the jar with the full 16 ounces. A sample of 20 jars has
a mean of 15.8 ounces and a standard deviation of 0.32 ounce. Is there enough evidence to
support the inspector's claim that the mean number of ounces of coffee in the jars is less than
16? Use a = .05.
1.
H. and H
2. a
3.
Critical value(s)
4.
Graph
5.
Test Statistic
6.
P-value
7.
Reject H. or Do Not Reject H.
8.
Conclusion