Question

4. Consider the probability that exactly 76 out of 381 people will get the flu this winter.

Choose the best description of the area under the normal curve that would be used to approximate binomial probability.

Area to the right of 75.5

Area to the right of 76.5

Area to the left of 75.5

Area to the left of 76.5

Area between 75.5 and 76.5

Answer 1

Area between 75.5 and 76.5

When we use normal approximation to binomial distribution, the probability of n number of successes is the area under the normal curve between (n-0.5) and (n+0.5)