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Scoobiegal
06-11-2009, 04:06 PM
Can someone please show me how to figure out this problem. Thank you for your time and for your help.

The health of employees is monitored by periodically weighing them. A sample of 54 employees has a mean weight of 183.9 lbs. Assuming that  is known to be 121.2 lb. Use a 0.10 level to test the claim that the population mean weight of all such employees is less than 200 lb.

vicki
06-15-2009, 02:53 AM
The is a one sample t-test. The test statistic is (183.9-200)/sqrt(121.2/54). Then you compare it with the left-tailed critical value.