Which relation is a function? A. (4-2), (5,-3), (6,-2), (7,-3) B. (3,10), (2,20), (3,30), (4,40) C. (-5,2), (-5,3), (-10,4), (-10,5) D. (10,15), (20,25), (8,30), (20,35)

1. 34

2. 268

3. x=14.4

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: