The table below is based on the data at the beginning of this chapter and shows the probability of the next book requested falling into each of the three categories listed, assuming that each book is equally likely to be requested. Category of book Typical numbers Probability On the shelves (S) 20 000 0.25 Out on loan (L) 44000 0.55 Unauthorised loan (U) 16000 0.20 Total (S + L+ U) 80 000 What is the probability that a randomly requested book is either out on loan or on unauthorised loan (i.e. that it is not available)?
The table below is based on the data at the beginning of this chapter and shows the probability of the next book requested falling into each of the three categories listed, assuming that each book is equally likely to be requested. Category of book Typical numbers Probability On the shelves (S) 20 000 0.25 Out on loan (L) 44000 0.55 Unauthorised loan (U) 16000 0.20 Total (S + L+ U) 80 000 What is the probability that a randomly requested book is either out on loan or on unauthorised loan (i.e. that it is not available)?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:The table below is based on the data at the beginning of this chapter and
shows the probability of the next book requested falling into each of the three
categories listed, assuming that each book is equally likely to be requested.
Category of book
Typical numbers
Probability
On the shelves (S)
20000
0.25
Out on loan (L)
44000
0.55
Unauthorised loan (U)
16000
0.20
Total (S + L + U)
80 000
1
What is the probability that a randomly requested book is either out on loan
or on unauthorised loan (i.e. that it is not available)?
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