Athletes are interested to know whether their Transition 1 time from swim to bike in a sprint triathlon is the same as in a super sprint triathlon. Consider the 2013 male triathletes who competed in both the Individual Sprint Triathlon (sprint) and in the Team Relay Triathlon (super sprint) as a sample of all male triathletes. Details of their race times can be found in the Excel sheet “2013 Men Sprint & Super Sprint”. (Hint: The athlete’s individual performance in a Team Relay is their Super Sprint data.) a) Consider the differences for Transition 1 times between a sprint triathlon and a super sprint triathlon. (Hint: The sample data are matched pairs. Explain why.) Find the sample mean and sample standard deviation for the differences. b) Is there enough evidence at the 10% significance level to conclude that the average Transition 1 time is different in a sprint than in a super sprint? (Hint: Use the results of a) and apply the t-test for difference of population means.) Provide a possible explanation for the difference you did or did not observe. c) Estimate, with 90% confidence, the population mean difference in Transition 1 times between a sprint and super sprint. Interpret the result. (Hint: Use the results of a) to construct a confidence interval estimate using the t-distribution.) Athlete Information Sprint Super Sprint (Individual Result from Team Relay) Year First Last P/T Place Total Time Swim Transition 1 Bike Transition 2 Run Place Total Time Swim Transition 1 Bike Transition 2 Run 2013 Will Allan NS 23 1:01:14 0:11:03 0:00:50 0:32:33 0:00:37 0:16:11 9 0:20:49 0:03:59 0:00:37 0:10:29 0:00:41 0:05:04 2013 Cooper Bentley AB 13 0:58:50 0:09:37 0:00:42 0:31:13 0:00:37 0:16:41 3 0:20:16 0:03:14 0:00:36 0:10:40 0:00:38 0:05:01 2013 Robert Bigsby SK 5 0:56:15 0:08:52 0:00:42 0:29:41 0:00:34 0:16:26 5 0:19:32 0:03:07 0:00:33 0:10:21 0:00:38 0:04:55 2013 Reid Burrows NB 15 0:59:05 0:09:10 0:00:45 0:30:20 0:00:38 0:18:12 8 0:20:00 0:03:07 0:00:34 0:10:04 0:00:40 0:05:37 2013 Austen Forbes ON 7 0:56:42 0:08:55 0:01:05 0:30:18 0:00:36 0:15:48 2 0:19:43 0:03:15 0:00:36 0:10:31 0:00:37 0:04:45 2013 Connor Foreman BC 10 0:57:30 0:08:48 0:00:47 0:29:39 0:00:39 0:17:37 6 0:20:07 0:03:08 0:00:36 0:10:39 0:00:40 0:05:06 2013 Conor Gillespie-Friesen NS 3 0:55:35 0:08:51 0:00:41 0:29:44 0:00:36 0:15:43 9 0:19:10 0:02:59 0:00:36 0:09:59 0:00:38 0:05:00 2013 Peter Gregory NL 24 1:01:33 0:09:01 0:01:00 0:31:33 0:00:44 0:19:15 7 0:21:33 0:03:18 0:00:48 0:11:03 0:00:50 0:05:37 2013 Xavier Grenier-Talavera QC 1 0:55:13 0:08:46 0:00:45 0:29:41 0:00:34 0:15:27 1 0:18:52 0:03:05 0:00:34 0:09:53 0:00:38 0:04:45 2013 Darian Hole MB 16 0:59:12 0:09:32 0:00:51 0:31:08 0:00:38 0:17:03 4 0:20:50 0:03:30 0:00:40 0:10:36 0:00:48 0:05:17 2013 Sean Hooper SK 21 1:01:00 0:09:46 0:00:51 0:31:44 0:00:37 0:18:02 5 0:21:07 0:03:41 0:00:38 0:10:47 0:00:45 0:05:17 2013 Aidan Katz SK 25 1:02:17 0:08:59 0:00:54 0:32:28 0:00:38 0:19:18 5 0:20:49 0:03:15 0:00:34 0:10:58 0:00:39 0:05:24 2013 Carsten Lapointe BC 19 0:59:56 0:09:33 0:00:48 0:31:11 0:00:35 0:17:49 6 0:20:51 0:03:37 0:00:36 0:10:50 0:00:38 0:05:12 2013 Francis Lefebvre QC 8 0:56:51 0:08:53 0:00:40 0:29:39 0:00:34 0:17:05 1 0:19:40 0:03:22 0:00:34 0:10:22 0:00:38 0:04:47 2013 Alexis Lepage QC 11 0:57:45 0:08:47 0:00:46 0:30:47 0:00:37 0:16:48 1 0:19:56 0:03:08 0:00:37 0:10:09 0:00:44 0:05:21 2013 Alexander MacKay PEI 22 1:01:09 0:09:10 0:00:44 0:30:22 0:00:42 0:20:11 10 0:21:22 0:03:10 0:00:34 0:11:34 0:00:39 0:05:27 2013 Tyler Mislawchuk MB 2 0:55:26 0:08:46 0:00:45 0:29:41 0:00:33 0:15:41 4 0:19:02 0:03:01 0:00:35 0:09:53 0:00:38 0:04:56 2013 Aron Mohammadi ON 14 0:58:58 0:09:05 0:00:39 0:30:35 0:00:39 0:18:00 2 0:20:13 0:03:14 0:00:37 0:10:45 0:00:39 0:05:00 2013 Alex Neuffer PEI 26 1:02:40 0:11:25 0:00:58 0:32:46 0:00:43 0:16:48 10 0:21:04 0:04:02 0:00:39 0:10:59 0:00:43 0:04:44 2013 Jericho O'Connell BC 20 1:00:24 0:09:35 0:00:55 0:31:49 0:00:39 0:17:26 6 0:21:06 0:03:30 0:00:40 0:10:42 0:00:57 0:05:19 2013 Russell Pennock AB 6 0:56:24 0:08:50 0:00:55 0:30:34 0:00:37 0:15:28 3 0:19:21 0:03:05 0:00:37 0:10:21 0:00:35 0:04:45 2013 John Pexman AB 17 0:59:17 0:09:25 0:00:57 0:30:43 0:00:57 0:17:15 3 0:20:20 0:03:25 0:00:37 0:10:25 0:00:40 0:05:15 2013 Martin Sobey PEI 27 1:03:18 0:10:15 0:01:02 0:33:08 0:00:37 0:18:16 10 0:22:18 0:03:58 0:00:41 0:11:48 0:00:38 0:05:14 2013 Patrick Stewart NS 29 1:06:54 0:11:26 0:00:57 0:33:53 0:00:43 0:19:55 9 0:24:33 0:03:44 0:00:45 0:12:26 0:00:46 0:06:53 2013 Paul Tremblay NB 30 1:07:29 0:11:43 0:00:58 0:34:38 0:00:42 0:19:28 8 0:21:18 0:04:09 0:00:38 0:10:32 0:00:41 0:05:21 2013 Riley Unger MB 12 0:58:07 0:08:49 0:00:49 0:29:38 0:00:44 0:18:07 4 0:20:21 0:03:17 0:00:36 0:10:13 0:00:39 0:05:38 2013 Charles Waugh NB 28 1:05:50 0:09:31 0:01:20 0:34:25 0:00:46 0:19:48 8 0:22:51 0:03:36 0:00:40 0:12:04 0:00:48 0:05:44 2013 Marty Whelan NL 9 0:57:26 0:08:46 0:00:50 0:29:39 0:00:38 0:17:33 7 0:19:56 0:03:02 0:00:34 0:09:58 0:00:43 0:05:42 2013 Nathan Wilson NL 18 0:59:23 0:09:21 0:00:44 0:31:20 0:00:41 0:17:17 7 0:21:09 0:03:29 0:00:38 0:10:41 0:00:57 0:05:26 2013 Myles Zagar ON 4 0:56:04 0:08:46 0:00:45 0:29:42 0:00:39 0:16:12 2 0:19:44 0:03:04 0:00:34 0:09:54 0:00:41 0:05:3
Athletes are interested to know whether their Transition 1 time from swim to bike in a sprint triathlon is the same as in a super sprint triathlon. Consider the 2013 male triathletes who competed in both the Individual Sprint Triathlon (sprint) and in the Team Relay Triathlon (super sprint) as a sample of all male triathletes. Details of their race times can be found in the Excel sheet “2013 Men Sprint & Super Sprint”. (Hint: The athlete’s individual performance in a Team Relay is their Super Sprint data.)
a) Consider the differences for Transition 1 times between a sprint triathlon and a super sprint triathlon. (Hint: The sample data are matched pairs. Explain why.) Find the sample mean and sample standard deviation for the differences.
b) Is there enough evidence at the 10% significance level to conclude that the average Transition 1 time is different in a sprint than in a super sprint? (Hint: Use the results of a) and apply the t-test for difference of population means.) Provide a possible explanation for the difference you did or did not observe.
c) Estimate, with 90% confidence, the population mean difference in Transition 1 times between a sprint and super sprint. Interpret the result. (Hint: Use the results of a) to construct a confidence
Athlete Information | Sprint | Super Sprint (Individual Result from Team Relay) | |||||||||||||||
Year | First | Last | P/T | Place | Total Time | Swim | Transition 1 | Bike | Transition 2 | Run | Place | Total Time | Swim | Transition 1 | Bike | Transition 2 | Run |
2013 | Will | Allan | NS | 23 | 1:01:14 | 0:11:03 | 0:00:50 | 0:32:33 | 0:00:37 | 0:16:11 | 9 | 0:20:49 | 0:03:59 | 0:00:37 | 0:10:29 | 0:00:41 | 0:05:04 |
2013 | Cooper | Bentley | AB | 13 | 0:58:50 | 0:09:37 | 0:00:42 | 0:31:13 | 0:00:37 | 0:16:41 | 3 | 0:20:16 | 0:03:14 | 0:00:36 | 0:10:40 | 0:00:38 | 0:05:01 |
2013 | Robert | Bigsby | SK | 5 | 0:56:15 | 0:08:52 | 0:00:42 | 0:29:41 | 0:00:34 | 0:16:26 | 5 | 0:19:32 | 0:03:07 | 0:00:33 | 0:10:21 | 0:00:38 | 0:04:55 |
2013 | Reid | Burrows | NB | 15 | 0:59:05 | 0:09:10 | 0:00:45 | 0:30:20 | 0:00:38 | 0:18:12 | 8 | 0:20:00 | 0:03:07 | 0:00:34 | 0:10:04 | 0:00:40 | 0:05:37 |
2013 | Austen | Forbes | ON | 7 | 0:56:42 | 0:08:55 | 0:01:05 | 0:30:18 | 0:00:36 | 0:15:48 | 2 | 0:19:43 | 0:03:15 | 0:00:36 | 0:10:31 | 0:00:37 | 0:04:45 |
2013 | Connor | Foreman | BC | 10 | 0:57:30 | 0:08:48 | 0:00:47 | 0:29:39 | 0:00:39 | 0:17:37 | 6 | 0:20:07 | 0:03:08 | 0:00:36 | 0:10:39 | 0:00:40 | 0:05:06 |
2013 | Conor | Gillespie-Friesen | NS | 3 | 0:55:35 | 0:08:51 | 0:00:41 | 0:29:44 | 0:00:36 | 0:15:43 | 9 | 0:19:10 | 0:02:59 | 0:00:36 | 0:09:59 | 0:00:38 | 0:05:00 |
2013 | Peter | Gregory | NL | 24 | 1:01:33 | 0:09:01 | 0:01:00 | 0:31:33 | 0:00:44 | 0:19:15 | 7 | 0:21:33 | 0:03:18 | 0:00:48 | 0:11:03 | 0:00:50 | 0:05:37 |
2013 | Xavier | Grenier-Talavera | QC | 1 | 0:55:13 | 0:08:46 | 0:00:45 | 0:29:41 | 0:00:34 | 0:15:27 | 1 | 0:18:52 | 0:03:05 | 0:00:34 | 0:09:53 | 0:00:38 | 0:04:45 |
2013 | Darian | Hole | MB | 16 | 0:59:12 | 0:09:32 | 0:00:51 | 0:31:08 | 0:00:38 | 0:17:03 | 4 | 0:20:50 | 0:03:30 | 0:00:40 | 0:10:36 | 0:00:48 | 0:05:17 |
2013 | Sean | Hooper | SK | 21 | 1:01:00 | 0:09:46 | 0:00:51 | 0:31:44 | 0:00:37 | 0:18:02 | 5 | 0:21:07 | 0:03:41 | 0:00:38 | 0:10:47 | 0:00:45 | 0:05:17 |
2013 | Aidan | Katz | SK | 25 | 1:02:17 | 0:08:59 | 0:00:54 | 0:32:28 | 0:00:38 | 0:19:18 | 5 | 0:20:49 | 0:03:15 | 0:00:34 | 0:10:58 | 0:00:39 | 0:05:24 |
2013 | Carsten | Lapointe | BC | 19 | 0:59:56 | 0:09:33 | 0:00:48 | 0:31:11 | 0:00:35 | 0:17:49 | 6 | 0:20:51 | 0:03:37 | 0:00:36 | 0:10:50 | 0:00:38 | 0:05:12 |
2013 | Francis | Lefebvre | QC | 8 | 0:56:51 | 0:08:53 | 0:00:40 | 0:29:39 | 0:00:34 | 0:17:05 | 1 | 0:19:40 | 0:03:22 | 0:00:34 | 0:10:22 | 0:00:38 | 0:04:47 |
2013 | Alexis | Lepage | QC | 11 | 0:57:45 | 0:08:47 | 0:00:46 | 0:30:47 | 0:00:37 | 0:16:48 | 1 | 0:19:56 | 0:03:08 | 0:00:37 | 0:10:09 | 0:00:44 | 0:05:21 |
2013 | Alexander | MacKay | PEI | 22 | 1:01:09 | 0:09:10 | 0:00:44 | 0:30:22 | 0:00:42 | 0:20:11 | 10 | 0:21:22 | 0:03:10 | 0:00:34 | 0:11:34 | 0:00:39 | 0:05:27 |
2013 | Tyler | Mislawchuk | MB | 2 | 0:55:26 | 0:08:46 | 0:00:45 | 0:29:41 | 0:00:33 | 0:15:41 | 4 | 0:19:02 | 0:03:01 | 0:00:35 | 0:09:53 | 0:00:38 | 0:04:56 |
2013 | Aron | Mohammadi | ON | 14 | 0:58:58 | 0:09:05 | 0:00:39 | 0:30:35 | 0:00:39 | 0:18:00 | 2 | 0:20:13 | 0:03:14 | 0:00:37 | 0:10:45 | 0:00:39 | 0:05:00 |
2013 | Alex | Neuffer | PEI | 26 | 1:02:40 | 0:11:25 | 0:00:58 | 0:32:46 | 0:00:43 | 0:16:48 | 10 | 0:21:04 | 0:04:02 | 0:00:39 | 0:10:59 | 0:00:43 | 0:04:44 |
2013 | Jericho | O'Connell | BC | 20 | 1:00:24 | 0:09:35 | 0:00:55 | 0:31:49 | 0:00:39 | 0:17:26 | 6 | 0:21:06 | 0:03:30 | 0:00:40 | 0:10:42 | 0:00:57 | 0:05:19 |
2013 | Russell | Pennock | AB | 6 | 0:56:24 | 0:08:50 | 0:00:55 | 0:30:34 | 0:00:37 | 0:15:28 | 3 | 0:19:21 | 0:03:05 | 0:00:37 | 0:10:21 | 0:00:35 | 0:04:45 |
2013 | John | Pexman | AB | 17 | 0:59:17 | 0:09:25 | 0:00:57 | 0:30:43 | 0:00:57 | 0:17:15 | 3 | 0:20:20 | 0:03:25 | 0:00:37 | 0:10:25 | 0:00:40 | 0:05:15 |
2013 | Martin | Sobey | PEI | 27 | 1:03:18 | 0:10:15 | 0:01:02 | 0:33:08 | 0:00:37 | 0:18:16 | 10 | 0:22:18 | 0:03:58 | 0:00:41 | 0:11:48 | 0:00:38 | 0:05:14 |
2013 | Patrick | Stewart | NS | 29 | 1:06:54 | 0:11:26 | 0:00:57 | 0:33:53 | 0:00:43 | 0:19:55 | 9 | 0:24:33 | 0:03:44 | 0:00:45 | 0:12:26 | 0:00:46 | 0:06:53 |
2013 | Paul | Tremblay | NB | 30 | 1:07:29 | 0:11:43 | 0:00:58 | 0:34:38 | 0:00:42 | 0:19:28 | 8 | 0:21:18 | 0:04:09 | 0:00:38 | 0:10:32 | 0:00:41 | 0:05:21 |
2013 | Riley | Unger | MB | 12 | 0:58:07 | 0:08:49 | 0:00:49 | 0:29:38 | 0:00:44 | 0:18:07 | 4 | 0:20:21 | 0:03:17 | 0:00:36 | 0:10:13 | 0:00:39 | 0:05:38 |
2013 | Charles | Waugh | NB | 28 | 1:05:50 | 0:09:31 | 0:01:20 | 0:34:25 | 0:00:46 | 0:19:48 | 8 | 0:22:51 | 0:03:36 | 0:00:40 | 0:12:04 | 0:00:48 | 0:05:44 |
2013 | Marty | Whelan | NL | 9 | 0:57:26 | 0:08:46 | 0:00:50 | 0:29:39 | 0:00:38 | 0:17:33 | 7 | 0:19:56 | 0:03:02 | 0:00:34 | 0:09:58 | 0:00:43 | 0:05:42 |
2013 | Nathan | Wilson | NL | 18 | 0:59:23 | 0:09:21 | 0:00:44 | 0:31:20 | 0:00:41 | 0:17:17 | 7 | 0:21:09 | 0:03:29 | 0:00:38 | 0:10:41 | 0:00:57 | 0:05:26 |
2013 | Myles | Zagar | ON | 4 | 0:56:04 | 0:08:46 | 0:00:45 | 0:29:42 | 0:00:39 | 0:16:12 | 2 | 0:19:44 | 0:03:04 | 0:00:34 | 0:09:54 | 0:00:41 | 0:05:34 |
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