The average wind speed at a local weather station is 34.3 miles per hour. the highest speed ever recorded at the station is 319.0 miles per hour. how much faster is the highest recorded wind speed than the average wind speed? how much faster is the highest recorded wind speed than the average wind speed?

41*67/2=1373.5

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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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