Question 4 Telephone calls enter the support clesk) of a compaing of the average of two every 3 minutes. What is the probability of 4 or less calls during a Tminute period? Question 5 Bluebird Lumber and Havelware Comparing whyfactures a wetal ring for industrial engines that usually weighs about 1.4 ka, A vandown Sample of 40 of these metal produced the flowing a weights kg ) b U 10 51 1.59 1:42 1:25 1.24 151 1051 1.19 1062 16 31 1. 56 1.16 1. 25 1,48 1:59 1.42 1:62 1.25 1.31 1. 16 1. 48 1.96 1.51 1.62 1. 45 1.53 1.791 1.19 1034 1. 34 1, 48 151 1. 31 1 02 1.65 1.45 1,0x 139 1,42 1. 76 I Construct a frequency distribution table using- classes, use the smallest value in the data set as the lower class limit of the first class . data . I Construct an Ogive curve for the using the Ogive how many metal vings ave less than 1.50 keyQuestion c for so airplanes that arrived late at Falest tudevnational hiupout during a weak The time by which they were late was observed below Time (minutes 0-20 20-40 /40 - 60 60- 80 70- 100 15 20 3 planes a find the Mean b/ Find the Median 4 Calculate The standard dovivation 1. 31 1. 16 1. 34 1 . 76Simplify the following fictorial expressions 14: ( leave your answer in factorial 2 - 1 (leave your answer to its Simplest Form ) (SM ) ( p - 2 ) ( p 2 - 5 ) ! ( leave your answer to its simplest fumy ( 3 M) Question 2 What is the probability distribution For random variable , which would be the sum of 3 kollead dice ? Also calculate the mean, variance and Standowel devivation ( SM ) Question 3 IA fair coin is tossed 6 times Find the probability of obtaining atxactly it heads 6 At least & heads ( 2M ) C At most a heads