\fQUESTION 3 The table below shows the scores mathematics exam for 7 sample students. 56 43 88 99 74 88 24 Find and discuss the Mean, Median, and Mode. (7 marks) b Then, calculate the range, variance, and standard deviation. (7 marks) QUESTION 4 The diagram below shows the stem and leaf display for the weight of calves in a farm. (data are in pounds) 10 11 12 3 Kay: 11 2 means 112 The farmer forgot to include the weight of his favourite calf, Derek, who has (3 marks) a weight of 156 pounds. If the farmer includes Derek in his data, how will it affect the mean weight? b. What is the range of the data? (2 marks) QUESTION 5 The time taken. K, for husbands to select the perfect anniversary gift for their wife can be modeled by a normal distribution with mean of 1.6 hours and standard deviation of 0.3 hours. Find the probability of the time taken to shop is least 2 hours, (2 marks) b Find the probability of the time taken to shop for the gift is between 1 to 2 (3 marks) hours. C. Find the value of f such that P (K