Esther made the two-way table below showing the number of her schoolmates who have different pets. Students’ Pets Cats Dogs Total 7th Grade 8th Grade 26 35 61 Total 54 48 Which shows the correct values for Esther’s seventh-grade classmates who have pets? cats: 13; dogs: 28 cats: 28; dogs: 13 cats: 80; dogs: 83 cats: 83; dogs: 80.

the answer is b.)

< 1=< 2

i think it is 18

step-by-step explanation:

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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