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Question 1 A scientist is conducting a vaccine trial to 30 participants. The days (20 to obtain the result from the experiment are given below. Construct a MARKS) frequency distribution for the data. 4 4 10 11 6 6 AOA CUT A 8 10 11 9 9 4 7 11 7 T Upload file File number limit: 10 Single file size limit: 10MB Allowed file types: Word, Excel, PPT, PDF, Image, Video, Audio 43 Question 2 a) Given the random variable X ~ N (220,25). Find each of the following probabilities: i. P(X 166) (3 MARKS) ii. P(155