16 It is believed that a coin is biased so that the probability of obtaining a head when the coin is tossed is 0.7
16
- Assume that the probability of obtaining a head when the coin is tossed is indeed 0.7
16 - Find the probability of obtaining exactly 6 heads from 7 tosses of the coin.
16
- (ii) Find the mean number of heads obtained from 7 tosses of the coin.
16 - Harry believes that the probability of obtaining a head for this coin is actually greater than 0.7
To test this belief he tosses the coin 35 times and obtains 28 heads.
Carry out a hypothesis test at the \(10 \%\) significance level to investigate Harry's belief.
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