Jake wants to estimate 15.92+0.85 . how can he use rounding to estimate the sum? what is the estimate?

17

Step-by-step explanation:

15.92 is close to 16

0.85 is close to 1

15.92 + 0.85 is close to 16 + 1

16 + 1 = 17

15.92 + 0.85 is approximately 17

kk.bj.

step-by-step explanation:

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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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