Question

A weight loss program claims that program participants have a mean weight loss of at least 10 pounds after 1 month. The weight losses (in pounds) of a random sample of 30 program participants are listed below. At the 1% significance level, is this enough evidence to reject the program’s claim?   

4.7         6.0        7.2         8.3       9.2       10.1         14.0       11.7         12.8       10.8

11.0       7.2         8.0        4.7      11.8     10.7          6.1         8.8           7.7         8.5

9.5         10.2        5.6        6.9      7.9         8.6         10.5         9.6           5.7        9.6

Answer 1

Solution:

• Conclusion:

There is enough evidence to reject the program claims that program participants have a mean weight loss of at least 10.