Answer Happy

Question 4: For those children (at a particular school) whose parents drive them to school from home, suppose the time parents' driving time is uniformly distributed on the interval 2,20 (in minutes). If such a parent is randomly selected, what is the probability they drive between 10 and 15 minutes to the school? (a) 0.10 (b) 0.06 (c) 0.12 (d) 0.25 (e) 0.28 Question 5: Suppose that when toddlers register for swimming classes they get assessed by a swim instructor. The swim instructor assigns a score. If we assume these scores are normally distributed with mean 7 and standard deviation of 3, what is the probability that a randomly selected toddler (coming for their assessment) scores below 4? (a) 0.841 (b) 0.631 (c) 0.247 (d) 0.369 (e) 0.159