Sports teams want to get strong, fast players. In one league, no player has ever run the 40 yard dash in less than 4.2 seconds. We could consider the 4.2 seconds as having come from a \_\_\_\_\_, because sports leagues and teams test all their players.
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Sri K.
The time it takes NFL running backs to run the 40-yard dash follows a normal distribution with a mean of 4.59 seconds and a standard deviation of 0.12 seconds. Let x represent the time. Using the Empirical Rule, the probability that an NFL running back will run the 40-yard dash in less than 4.70 seconds is 0.83.
Adi S.
An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash is normally distributed with a mean equal to 0.12 and a standard deviation equal to. 0.02 seconds,. What percentage of players on the team run the 100-meter dash in 0.14 seconds or faster?
Marc L.
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