Problem 8 In a survey of 800 students attending Essex County College, it was found that 500 students are taking English, 280 students are taking Chemistry, and 180 are taking both English and Chemistry. a) Find the probability that a randomly selected student from the survey is taking Chemistry or English? b) Find the probability that a randomly selected student from the survey is taking Chemistry but not English? c) Find the probability that a randomly selected student from the survey is taking neither Chemistry nor English? d) If a randomly selected student is taking English, what is the probability that the student is also taking Chemistry?

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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.