Ms. murray asked her twenty students how many national parks each of them had visited. national parks visited population data 2 1 3 0 4 5 4 3 2 2 1 5 2 0 3 4 0 5 3 4 calculate the mean number of parks visited by a student from the population. round the answer to the nearest whole number.

is 3 parks

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step-by-step explanation:

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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: