Question

In one county, the conviction rate for DUI is 85%. Estimate the probability that of the next 100 DUI summonses issued, there will be at least 90 convictions.

Answer 1

ok so you know the current rate of conviction. You want to know what the probability is that a slightly higher rate will occur. How would you go about using the current rate to rate the suggested rate of 90?

Answer 2

actually I didn't undertstand the question.
It jst says "Estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution." before asking the above question.

Answer 3

yes so you know the normal distribution and binomial distribution? You need these to figure out how the probability changes from how far away you deviate from the mean.

Answer 4

yes