A statistics student samples a group of people to determine the probability that a student at West Harrison High School owns a car. Which group of people should the student survey to provide the most accurate sample? a a fourth of the students in each grade at West Harrison High School
b the students who sit with the statistics student at lunch
c the members of the JV soccer team at West Harrison High School
d all the students in the freshman class at West Harrison High School

A

Step-by-step explanation:

it makes the most sense to survey students from each grade.

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

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: