In a recent survey, 80% of the community favored building a police substation in their neighborhood. You randomly select 19 citizens and ask each if he or she thinks the community needs a police substation.

Decide whether you can use the normal distribution to approximate the binomial distribution. If so, find the mean and standard deviation. If not, explain why.

Decide if it is appropriate to use the normal distribution to approximate the random variable x for a binomial experiment with sample size of n = 6 and probability of success p = 0.4.

Ten percent of the population is left-handed. A class of 100 students is selected. Convert the binomial probability P(x > 12) to a normal probability by using the correction for continuity.

P(x > 12.5)

P(x < 11.5)

P(x 12.5)

P(x 11.5)