A survey of adults in a certain large town found that 76% of people wore a watch on their left wrist,
15% wore a watch on their right wrist and 9% did not wear a watch.
(ii) A random sample of 200 adults was taken. Using a suitable approximation, ﬁnd the probability
that more than 155 wore a watch on their left wrist.
Can someone please explain to me how you do this? I guess you have to use the normal distribution.

Question

A survey of adults in a certain large town found that 76% of people wore a watch on their left wrist,
15% wore a watch on their right wrist and 9% did not wear a watch.
(ii) A random sample of 200 adults was taken. Using a suitable approximation, ﬁnd the probability
that more than 155 wore a watch on their left wrist.
Can someone please explain to me how you do this? I guess you have to use the normal distribution.