Perry goes to bed at 10 p. m. and sleeps until 6 a. m. every weekday morning this week he sleeps until 7: 30 a. m. on saturday and on sunday until 8 a. m. perry goes to bed at the same time every day what is the average time he gets up on a weekend morning draw the hands on the clock to show his average rising time for a weekend day

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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:

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