Mathematics, 19.02.2021 18:50, thatcommondumbgirl

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Mathematics, 21.06.2019 20:00, ayoismeisalex

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean and standard deviation according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

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Mathematics, 21.06.2019 22:30, badpotterchris

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?

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Mathematics, 21.06.2019 22:30, aliviafrancois2000

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

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Mathematics, 22.06.2019 02:40, simran922

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?

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