4. QUESTION:
M&M sweets are of varying colours and the different colours occur in different proportions. The table below gives the probability that a randomly chosen M&M has each colour, but the value for tan candies is missing.
Colour Brown Red Yellow Green Orange Tan
Probability 0.3 0.2 0.2 0.1 0.1 ?
(a) What value must the missing probability be?
(b) You draw an M&M at random from a packet. What is the probability of each of the following events?
i. You get a brown one or a red one.
ii. You don’t get a yellow one.
iii. You don’t get either an orange one or a tan one.
iv. You get one that is brown or red or yellow or green or orange or tan.
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