A box contains 10 fuses. Eight of them are rated at 10 amperes (A) and the other two are rated at 15 A. Fuses are randomly selected from the box, one by one, until a 15 A fuse is selected. a. What is the probability that the first two fuses are both 10 A? b. What is the probability that a total of two fuses are selected from the box? c. What is the probability that more than three fuses are selected from the box?

Q: 60% of all students at a college still need to take another math class. If 4 students are randomly…

A: Givenp=0.60n=4x~Binomial(n=4,p=0.60)P(X=x)=(nx)×px×(1-p)n-x ; x=0,1...,n

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