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karebareyo

01.08.2022

Mathematics

Number of students in Ms. Sarno's homeroom = 20

Number of female in Ms. Sarno's homeroom = 12

Number of Male in Ms. Sarno's homeroom = 20 - 12 = 8

Probability (Selecting Female act as “teacher’s helper.” )= $\frac{12}{20}=\frac{3}{5}$

Probability (Selecting male act as “teacher’s helper.” )= $\frac{8}{20}=\frac{2}{5}$

Out of Four options given , the best simulation describing above Situation is ,

Option (C) A bag of 15 marbles, with 9 marbles representing female students, has a marble drawn 4 times with replacement is best simulation describing above situation.

The reason being, if 9 marbles represent female students out of 15 marbles and we have to select 4 females for four months that is for January, February, March, and April.So, marbles are drawn 4 times with replacement .

Probability of choosing four female as teacher's helper for four months if a bag of 15 marbles, with 9 marbles representing female students, has a marble drawn 4 times with replacement. = $[\frac{9}{15}]^4=[\frac{3}{5}]^4$

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