Barry asked 30 random students at his school to name. their favorite ice cream flavor. of the 30 students he asked 20 of them preferred chocolate. based on barry’s result how many of the 1500 students in the school mostly likely prefer chocolate ice cream

20/30

1500/30=50

20*50=1000

1000/1500

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: