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Question 1 (3} Mr Jaoohs runs a company of 156 employees. He decided to take three employees for training as supervisors. 1.1 Use the random number table below to draw three employees using simple random sampling method. Start at rowan.r 2. column 5 and read horizontally to the right. [3) TB 4? 14 51 32 9? T3 05 DB 15 41 39 T9 32 55 23 31 DD 35 2B {Junction 3 {7} The following data are the calories per half cup serving for 9 popqu chocolate ice cream brands reviewed by consumer reports: ITO 140 120 160 140 190 [65 150 l 10 If a frequencyr table must be constructed for the above data, answer the below questions: 3.1 Determine the data range (I) 3.2 If the data must be grouped into a frequency.' table. calculate the number of class intervals {round your answer to the next integer) [2} 3.3 Calculate the class width (round your answer to the next integer [2} 3.4 Calculate the mean the calories per half .. cup serving (2} Question 4 (12) The following table shows the heights of a group of 40 students at a certain university. Heights ( Number of in cm) students Class Cumulative midpoint frequency [ 159; 163) 2 161 2 [ 163; 167) 4 165 6 [ 167; 171) 10 169 16 [ 171; 175) 12 173 28 [ 175; 179) 6 177 34 [ 179; 183) 4 181 38 [ 183; 187) 2 185 40 W 4.1 Draw a frequency polygon. (5) 4.2 Determine the following: 4.2.1 Standard deviation (3) 4.2.2 Median (4) Question 5 (6)