Lansdale Middle School is having a math competition. Four students are called to the stand to answer a question. The question is: Based on the answer choices, which student was correct? Taylor: 81.30
John: 81.38
Kate: 81.35
Alex: 81.70

92.14 – 10.84

I will give a

find out the value of b

step-by-step explanation:

answer: b.48 for

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.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: