The Printout Below Refers to the Weekly Closing Stock Prices

Multiple Choice

The printout below refers to the weekly closing stock prices for Air Canada on 20 randomly selected weeks in 2000. Using a 5% level of significance, can you say that the average Air Canada stock price was less than $19.50?

A) Fail to reject the null hypothesis and conclude the mean stock price was $19.50.
B) Since the P-value is less than the selected alpha, reject the null hypothesis and conclude the mean stock price was lower than $19.50.
C) Since the P-value is more than the selected alpha, reject the null hypothesis and conclude the mean stock price was less than $19.50.
D) Since the P-value is less than the selected alpha, reject the null hypothesis and conclude the mean stock price was different from $19.50.