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Exar Question A3 200 college students were asked about their academic background. A lecturer found that 120 students too
Posted: Mon May 23, 2022 12:12 pm
by answerhappygod
- Exar Question A3 200 College Students Were Asked About Their Academic Background A Lecturer Found That 120 Students Too 1 (47.49 KiB) Viewed 14 times
Exar
Question A3 200 college students were asked about their academic background. A lecturer found that 120 students took DSE Mathematics in Chinese. 70 students chose the elective subject SEHH1031 Statistics. 35 students took DSE Mathematics in English and did not choose SEHH1031. [Hint: consider the following contingency table] Total Chose SEHH1031 Not choose SEHH1031 (S) (S) DSE Math in Chinese (C) DSE Math in English (C) Total 200 (a) Find the probability that a randomly selected college stude did not choose SEHH1031. (2 marks) (b) Find the probability that a randomly selected college student took DSE Mathematics in Chinese but chose SEHH1031. (2 marks) (c) Find the probability that a randomly selected college student took DSE Mathematics in English or chose SEHH1031. (2 marks) (d) For those 70 students chose the elective subject SEHH1031 Statistics, (10+#) students were randomly selected. Find the probability that 6 selected students took DSE Mathematics in Chinese. (4 marks) Correct your final answers to 3 decimal places whenever appropriate.