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a student is selected ar random. find tbe probability that the height of student is i)at least 145cm

a student is selected ar random. find tbe probability that the height of student is i)at least 145cm he heights of the students of a class is measured and recorded as given below : 125 - 130 130 - 135 135 - 140 140 — 145 - 150 150 - 155 Height (in cm) 120 - 125 No. of Students 7 7 11 3 5 9 8

Dear Student,
If a student has a height of at least 145 cms, it implies that the height should either 145 cm or more than that. Hence we will consider students of height 145-150 cms and 150-155 cms
Students having height more than 145 cm is 17 (9+8)
Favourable number of outcomes=17
Total number of outcomes=50 (Since the total number of children are 50)
P r o b a b i l i t y equals fraction numerator F a v o u r a b l e space n u m b e r space o f space o u t c o m e s over denominator T o t a l space n u m b e r space o f space o u t c o m e s end fraction equals 17 over 50

Regards

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17/50
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