kaylinrebecca
06.01.2020 •
Mathematics
The max light rail in portland, or has a waiting time that is normally distributed with a mean waiting time of 5 minutes with a standard deviation of 2.9 minutes. a random sample of 40 wait times was selected, what is the probability the sample mean wait time is under 4 minutes? round answer to 4 decimal places.
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Ответ:
it shouid be 1/8
Step-by-step explanation: