The following table shows the cost of 4 party favor packs. for example, the slinky costs $9 for a pack of 5. toy pack cost (dollars) quantity slinky 999 555 wind-up robot 161616 888 yo-yo 151515 666 emoji beach ball 333 222 which toy pack has a cost of $2.50dollar 2, point, 50 per toy? choose 1 choose 1 (choice a) a slinky (choice b) b wind-up robot (choice c) c yo-yo (choice d) d emoji beach ball

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

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