Here is part of the menu price list at a takeaway.
£1.20
Fish
£2.70
Chips
Peas
£1.60
Rice
45p| Sausage
90p Bread roll
25p| Samosa
30p
75p
Pickled onion
a) Keira buys a sausage, one portion of chips and a samosa.
How much does she pay?
£
b) Taha buys one fish, a portion of peas and a pickled onion.
lowan buys a portion of rice, a sausage and a bread roll.
How much more (in £) does Taha pay than lowan?
Optional working
£

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

d. you cannot tell because there are no values shown.

step-by-step explanation:

where is the question is there is a formula or is there not one

a

step-by-step explanation:

its wrong