33. Case study based 1: A group of students decided to make a project on Statistics. They are collecting the heights (in cm) of their 51 girls of Class IX-A, B and C of their school. After collecting the data, they arranged the data in the following frequency distribution form: Number of girls Height (in cm) 135-140 140 - 145 4 7 145 - 150 18 Ett 150 - 155 11 155-160 6 160-165 5 (1 33.1 The class interval with highest frequency is : (1) 145-150 (b) 150-155 (c) 140-145 (d) 155-160 33.2 What is the width of the class? (a) 10 (b) 15 (1 (d) none of these (c) 5 ( 33.3 How many students of the height 145 cm and above are there? (a) 40 (b) 29 (c) 18 (d) 22 33.4 How many students of the height more than 145 cm but less than 155 are there? ( 10 (b) 29 (c) 18 (d) 22