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.
Answers: 2
Mathematics, 22.06.2019 02:30
Acable company claims that the average household pays $78 a month for a basic cable plan, but it could differ by as much as $20. write an absolute value inequality to determine the range of basic cable plan costs with this cable company. a. |x β 78| β₯ 20 b. |x β 20| β₯ 78 c. |x β 20| β€ 78 d. |x β 78| β€ 20
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Mathematics, 22.06.2019 05:40
What is the inter-quartile range of the given data set? 2 3 6
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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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