Let S = {a, e, j, p, v, w} be a sample space of an experiment and let E = {a, e} and F = {a, p, w} be events of this experiment. Are the events E union F and E intersection Fc mutually exclusive? Yes No

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.