1 por Reba is a pet walker. She has a rule that "for each elephant she can walk3
zebras". On Tuesday she is scheduled to walk 9 zebras. Which proportion
can be used to determine how many elephants she can walo. (Letz-
number of zebras, Let e = number of elephants),

they are simplified

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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:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.