UNIVERSITY OF NEW BRUNSWICK DUNB (2021) STAT2263: Statistics for Non-... D Course Home Content Assessments ~ Communication Resources v Help v Assignments > Homework Chapter 7: Written Portion Homework Chapter 7: Written Portion Hide Folder Information Instructions Chapter 6 and 7 Written Homework Assignment . Answer all of the questions either by hand or typing. Show all work for part marks. Final answers are only worth 1 mark for each question. . Include photos of your Minitab output. . This homework covers topics from Chapters 6 and 7. 1. Suppose the activity times of a specific population of children follow a normal distribution with mean 145 minutes and a standard deviation of 22 minutes. a. [3 marks] What percentage of children have activity levels below 120 minutes? b. [3 marks] What percentage of children have activity levels between 100 minutes and 120 minutes? c. [3 marks] Suppose we were to choose at random, from the population, a sample of 16 children. What is the probability that the sample mean of children's activity levels will be between 140 and 155 minutes? d. [3 marks] Suppose that the children from this population with activity levels in the top 20% are permitted to join a special club, above how many minutes of activity would qualify a child to join the club? If you prefer to work from a word document of the questions, here it is: Word Document