Ali and Mira were comparing the size of their notebooks. Ali’s notebook was 5 inches wide and 12 inches long. Ali also put a pink bookmark inside her notebook. Her bookmark was 3 inches by 4 inches. Mira’s notebook was 6 inches wide and 9 inches long. How much bigger is Ali’s notebook compared to Mira’s?

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hello,

b) 62.47% of the students are between 14 and 18 years old.

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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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this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

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