Students in a high school woodworking class wants to conduct a survey to determine the percentage of students in the school who are willing to pay a fee for participating in workshops. Students in each home room are alphabetically sorted by last name. A simple random sample of 12 home rooms was selected and the survey was given to all 20 students in each home room. This plan is an example of which type of sampling? a)Cluster

b)Stratified random

c)Convenience

d)Simple random

e)Systematic

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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:

answer: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer

0.50 , 0.75

step-by-step explanation: