A farmer wants to know which type of strawberry produces larger fruit. He randomly selects 10 strawberries of Varlety A and 10 strawberries of Variety B. He finds the mass of each selected strawberry and records it in the table shown.
Mass of Each Strawberry (grams)
Variety A 15 22 14 12 15 18 20 14 18 22
Variety B 20 18 15 24 17 18 21 11 15 21
Which conclusion about the variability of the mass for each type of strawberry can be made from the data?

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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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