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Mnenie [13.5K]
3 years ago
6

When Jonathan runs the 400 meter dash, his finishing times are normally distributed with a mean of 88 seconds and a standard dev

iation of 2.5 seconds. If Jonathan were to run 48 practice trials of the 400 meter dash, how many of those trials would be between 89 and 91 seconds, to the nearest whole number?
Mathematics
1 answer:
Citrus2011 [14]3 years ago
7 0

Answer:

3.18%

2 between 89   91

Step-by-step explanation:

*Probability-Between 3.18%

Z1=0.04 Z2=0.12

x-1 89

x-2 (not required) 91

µ 88

σ 25

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