In: Statistics and Probability
Hockey Teams: There are five teams in the northeast conference of the NHL. Their win/loss records for the 2010/2011 season are summarized in the table below.
Observed Frequencies: Oi's
Montreal | Boston | Toronto | Ottawa | Buffalo | ||
Canadiens | Bruins | Maple Leafs | Senators | Sabres | Totals | |
Wins | 44 | 46 | 37 | 32 | 43 | 202 |
Losses | 38 | 36 | 45 | 50 | 39 | 208 |
Totals | 82 | 82 | 82 | 82 | 82 | 410 |
The Test: Test for a significant dependent relationship between wins/losses and team for this season. Conduct this test at the 0.01 significance level.
(a) What is the null hypothesis for this test?
H0: The win/loss record of a team in the northeast conference is significantly dependent of which team it is.
H0: The win/loss record of a team in the northeast conference is independent of which team it is.
(b) What is the value of the test statistic? Round to 3
decimal places unless your software automatically rounds to 2
decimal places.
χ2 =
(c) USE SOFTWARE to get the P-value of the test
statistic. Round to 4 decimal places unless your software
automatically rounds to 3 decimal places.
P-value =
(d) What is the conclusion regarding the null hypothesis?
reject H0
fail to reject H0
(e) Choose the appropriate concluding statement.
We have proven that win/loss record of the team is independent of which team it is.
The evidence suggests that the win/loss record of the team is significantly dependent on which team it is.
There is not enough evidence to conclude that the win/loss record of the team is significantly dependent on which team it is.