Test the claim that the population mean of all such employees weights is less than 200lb.
The health of employees is monitored by periodically, weighing them in. A sample of 54 has a mean weight of 183.9 lb. assuming that s is known to be 121.2 lb, employ a 0.10 significance level to test the claim that the population mean of all such employees weights is less than 200lb.
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, P-value, critical value(s), and state the final conclusion.