H0: u >= 20
Ha: u< 20
A sample of 50 provided a sample mean of 19.6. The populationstandard deviation is 1.4.
a. Compute the value of the test statistic (to 2 decimals).
b. What is the p-value (to 3 decimals)?
c. Using = .05, can it be concluded that the population mean isless than 20, Yes or no
d. Using = .05, what is the critical value for the teststatistic?
e. State the rejection rule: Reject H0 if z is (select, >=,>, <=, <, =, or not = ) the critical value
f. Using = .05, can it be concluded that the population mean isless than 20? Yes or No
