Chica.. por Normal text Tahoma 10 (16) The mean ? or a hypergeometric distributi

Question

Chica.. por Normal text Tahoma 10 (16) The mean ? or a hypergeometric distribution is given as: ?- b where n objects are to be chosen from a set of a objects of one kind and b objects of another kind. Use this formula to solve the following. Among 16 delivery trucks, five have wom brakes. If eight trucks are randomly picked for Inspection, how many of them can be expected to have worn brakes? (a) 1.25 (b) 2.5 (d) 5 (e) 2.0 (17) The Poisson Probability Distribution can be used to approximate the Binomial Distribution, when n is large and p is small such that n 2 100 and (a) np s S (b) np 5 (c)np> 10 (d) np

Explanation / Answer

17)
The Binomial distribution can be approximated well by Poisson when n is large and p is small with np < 10,
d)

18)
no,
since probability that they wear sportwear is not constant

19)
SFS and FSF are missing
e) both a)a and d)

20)
3*2/5*2/5*3/5
=0.288

b)

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