Use the tables below to find (p - 9(2). p(x)
X
q(x)
4
-1
4
1
2
3
2
-2
-3
2
-3
5
(p-9)(2) =

d. is the correct answer

step-by-step explanation:

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step-by-step explanation:

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answer: this is not a question

step-by-step explanation: this is a answer

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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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