Astate university issues five-digit student identification numbers to all of its students. none of the identification numbers contain the digit 0 and the digits cannot be repeated. how many ways are there to arrange five digits if only the numerals 1 through 9 are used?

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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:

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ωє ιт ¢αи вє ωяιттєи αѕ

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт