The new releases make up 4 of the available DVDs at a DVD store. The equation below is used to determine the total number of DVDs (d) in the store.
1/4d= 73
What is the total number of DVDs in the store?
OA 18
ОВ.296
OC. 292
OD77

49%

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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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