Find P (Senior Girl) Hint: P(A and B) P(B)
Classroom of Students
Boys Girls
Freshman 4
4 8
Sophomore 5 7 12
Junior 2 3 5
Senior 1 4 5
12
18
Reduce your fraction to lowest terms.
Enter the number that belongs in the green box.

step-by-step explanation:

seems like d

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

d is the only accurate one

step-by-step explanation: