A pet-food maker reports that the average weight gain of a puppy on a newly developed brand of puppy food is 0.3 pounds per month. Using statistical modeling you can predict which of the following? A: The average weight gain of a kitten on a newly developed brand of kitten food is also 0.3 lbs. a month.

B: The average weight gain of an adult dog on a newly developed brand of adult dog food is also 0.3 lbs. a month.

C: The average weight loss of a puppy on a newly developed brand of puppy food is 0.3 lbs. per month.

D: none of the above

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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:

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.