Mathematics: The length of an instant message conversation is normally distributed with a mean of 5 minutes and a standard deviation of .7 minutes. what is the probability that a conversation lasts longer than 6 minutes?

The length of an instant message conversation is normally

Ответ:

djnkyworld

07.01.2022

The z-score for 6 minutes is:
$z=\frac{X-\mu}{\sigma}=\frac{6-5}{0.7}=1.429$
Reference to a standard normal distribution table gives the result:
P(length > 6) = 0.077

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Ответ:

naomicervero

13.03.2022

Mathematics

Idon’t know what the answer is i wish i could

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The length of an instant message conversation is normally distributed with a mean of 5 minutes and a standard deviation of .7 minutes. what is the probability that a conversation lasts longer than 6 minutes?

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