In Seattle, the average monthly rainfall for April is 1.97 inches. If it rains 2.10 inches next April, which would be the percent increase over the monthly average?
O about 6.6%
about 6.2%
about 1.3%
about 0.9%

so what is the problem what are they asking you to solve

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so what is the problem what are they asking you to solve

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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