when do we use these formula? (3 points each) b.z Xu Vn 2 The average time it takes a group of college students to complete certain examinations is 46 2 minutes. The standard deviation is 8 minutes. Assume that the vanable is normally distributed. a. What is the probability that a randomly selected college student will complete the examination in less than 43 minutes. ? [Supply the corresponding solution of nach stop to solve the problem) Steps Solution 1: Identity the given information 2 Identify what is ask for 3. Identify the formula to be used 4. Solve the problem 5. State the final answerb. If 50 selected college students take the examination, what is the probability that the mean time it takes the group complete the test will be less than 43 minutes? Steps Solution 1. Identify the given information. umnotessom nath - 19 60 JAJ30 83JUCON SUC THI 23MTIVITOA THT STEWSNA OT CHAN Of 2. Identify what is asked. 3. Identify the formula to be used. 4. Solve the problem.pedal odule caroemptonce .hippiereall 's nocutpe annie 5, State the final answer. 3. What are the complete steps in a Test of Hypothesis (In order)