The first period math class was asked to create a situation that would yield data with variability. Which of the following situations would yield data with variability?
F How many students were tardy?
G How many students were tardy to first period at Gunn Middle School on September 15, 2014?
H How many students in Mrs. Hardy's homeroom have a last name that begins with an AP
J How many students in our class rode their bicycle to school today, September 15, 2014?

he has now walked a total of what?

if i know what this is maybe i can

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: