And upper a equals pe superscript rta=pert to solve the problem given. round answers to the nearest cent. find the accumulated value of an investment of $ 20 comma 000$20,000 for 44 years at an interest rate of 4 %4% if the money is a. compounded semiannually; b. compounded quarterly; c. compounded monthly d. compounded continuously.

answer:

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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: