Mathematics
Mathematics, 19.05.2021 01:00, babyphoraaaaa

Question 15 2 pts
The playing time X of jazz CDs has the normal distribution with mean 52 and standard deviation 7;
N(52,7).
According to the 68-95-99.7 rule, what percentage of jazz CDs play exactly 50 minutes?

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Question 15 2 pts
The playing time X of jazz CDs has the normal distribution with mean 52 and...

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