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h eclass.yorku.ca Winter 2021 - Term Test #2 - Stats Doesn.. Shania Works For A Company, Emerging T. Shania Works For A Company, Emerging T.. Shania Works For A Company, Emerging T Term Test 2 Class 21 Ask SAVY HE TA) Olushol Time left 1:31:33 Quiz navigation Question 1 Not yet NOTE: IN ORDER TO GET FULL MARKS, SHOW ALL CALCULATIONS AND STEPS. answered FAILURE TO DO SO WILL RESULT IN A SCORE OF "O".) Finish attempt ... Marked out of 10.00 A Biology professor is teaching sections A and B of BIOL1000. The professor knows from the P Flag past that the student exam marks of section A follows a normal distribution with an average of question 65, and a standard deviation of 19 while the student's exam marks of section B follows a normal distribution with an average of 70, and a standard deviation of 20. a) Find the probability that the average exam marks by a random sample of 100 students in section B is less than 67. b) What is the probability that the average exam marks of 81 randomly selected students from section A is one mark higher than the average exam marks of 100 randomly selected students from section B? c) The professor declares that no more than one-quarter of section B's students will get average marks. What is the probability that in a random sample of the 80 section B students, more than 28 will get the average marks? d) (Solve this part independently). A random sample of 6 National bank employees was taken to help estimate the average amount of time(x) employees spent per week on their cell phones. The sample data and some relevant information are listed below: 13, 5, 6, 10, 7, 12. Ex - 53, Sample Variance of x = 10.9667 Find an unbiased estimator of the average time per week for all bank employees. When you complete this Question, upload the solution immediately before moving to the next question. If this is your last question, then submit your test. MacBook Air esc 20 FS 888 F4 -. F5 - - F6 44 FB F9 F10 # $ 4 5 6 7 18 O Q W E R U O P A S D F G H K Z X C B N M