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Mathematics, 28.07.2020 20:01 kh3791
Sleeping schedule. A student gets at least 8 hours of sleep 45% of the nights, the sleeping schedule is independent from night to night. Let X1, X2, X3, X4 indicate whether the student gets at least 8 hours of sleep during the next 4 nights respectively. Let X = X1 + X2 + X3 + X4. Find the variance of X.
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Sleeping schedule. A student gets at least 8 hours of sleep 45% of the nights, the sleeping schedule...
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