The Printout Below Refers to the Weekly Closing Stock Prices

question 74

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.

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Definitions:

Mastoid

A prominent bony structure located behind the human ear, part of the temporal bone, containing air spaces that communicate with the middle ear.

Sternum

The long flat bone in the upper middle of the front of the chest to which the ribs are attached.

Costae

The plural form of costa, referring to ribs, which are long curved bones forming the rib cage.

Xiphoid Process

A small cartilaginous projection at the lower end of the sternum, which becomes bony in older adults.