Mathematics, 10.07.2019 23:30 heberavilesramirez52

The times of the runners in a marathon are normally distributed, with a mean of 3 hours and 50 minutes and a standard deviation of 30 minutes. what is the probability that a randomly selected runner has a time less than or equal to 3 hours and 20 minutes? use the portion of the standard normal table below to answer the question.
16%
32%
34%
84%

The times of the runners in a marathon are normally distributed, with a mean of 3 hours and 50 minut

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