5a. [3 marks]
A Chocolate Shop advertises free gifts to customers that collect three vouchers. The
vouchers are placed at random into 10% of all chocolate bars sold at this shop. Kati buys
some of these bars and she opens them one at a time to see if they contain a voucher. Let
P(X = n) be the probability that Kati obtains her third voucher on the nth bar opened.
(It is assumed that the probability that a chocolate bar contains a voucher stays at 10%
throughout the question.)
Show that P(X = 3) = 0.001 and P(X = 4) = 0.0027.
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Answer:
it will s a good question of maths.
Step-by-step explanation:
ot can be done by Bayes' theorum
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