Consider the following project network applying PERT/CPM as described, where the number over each through this network from start to finish, since the longest path is node is the time required for the corresponding activity. Consider the problem of finding the longest path (the largest total time) the critical path.

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b and c

x = 23.78

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hello,

b) 62.47% of the students are between 14 and 18 years old.

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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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