=+60. Swimming heats 2012. In Exercise 59, we looked at the times in two different heats for

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=+60. Swimming heats 2012. In Exercise 59, we looked at the times in two different heats for the 800-m men’s run from the 2012 Olympics. Unlike track events, swimming heats are not determined at random. Instead, swimmers are seeded so that better swimmers are placed in later heats.

Here are the times (in seconds) for the women’s 400-m freestyle from heats 3 and 5.

Country Name Time (secs) Heat GBR Rebecca Adlington 245.7 3 USA Chloe Sutton 247.1 3 ESP Mireia Belmonte 248.2 3 HUN Eva Risztov 249.1 3 CHN Li Xuanxu 250.9 3 ROU Camelia Potec 251.4 3 GBR Joanne Jackson 251.5 3 RSA Wendy Trott 251.6 3 FRA Camille Muffat 243.3 5 USA Allison Schmitt 243.3 5 NZL Lauren Boyle 243.6 5 DEN Lotte Friis 244.2 5 ESP Melanie Costa 246.8 5 AUS Bronte Barratt 248.0 5 HUN Boglarka Kapas 250.0 5 RUS Elena Sokolova 252.2 5 Do these results suggest that the mean times of heat 5 are faster than heat 3? Explain. Include a discussion of assumptions and conditions for your analysis.

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