500 juniors at PRHS took the ACT last year. The scores were distributed normally with a mean of 24 and a standard deviation of 4. 1. What is the probability of a student's score being between a 16 and a 32? 2. What percent of students scored at least a 28? 3. Approximately how many students scored higher than a 32?

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.