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MATH302 1005 Spring 2026 - APEI Jeremy Clark - Week
5 Knowledge Check Homework Questions – Results with
100% accuracy (SCORED 100%)
x
Attempt 2 of 4
Written Jan 9, 2026 1 2:32 PM -Jan 9, 2026 1 :14 PM
Attempt Score 1
Overall Grade (Highest Attempt) 1
Question 1 point
There is no prior information about the proportion of Americans who support gun
control in 201 8. If we want to estimate 95% confidence interval for the true
proportion of Americans who support gun control in 201 8 with a 0.36 margin of
error, how many randomly selected Americans must be surveyed? Answer: (Round
up your answer to nearest whole number)
v Hide question 1 feedback
Z-Critical Value = I .96
n
Question 2 1 / I point
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A researcher would like to estimate the proportion of all children that have been
diagnosed with
Autism Spectrum Disorder (ASD) in their county. They are using 95% confidence
level and the CDC national estimate that 1 in 68 0.01 47 children are diagnosed with
ASD. What sample size should the researcher use to get a margin of error to be
within 2%? Round up to the nearest integer. Answer
V Hide question 2 feedback
Z-Critical Value - — NORM.S.lNV(.975) = 1 .96
Question 3 point The population standard deviation for the height of college
baseball players is 3.2 inches. If we want to estimate 90% confidence interval for the
population mean height of these players with a 0.7 margin of error, how many
randomly selected players must be surveyed? (Round up your answer to nearest
whole number) Answer: -51---
v Hide question 3 feedback
Z-Critical Value = NORM.S.lNV(.95) = I .645
Question 4 point
There is no prior information about the proportion of Americans who support free
trade in 201 8. If we want to estimate a 97.5% confidence interval for the true
proportion of Americans who support free trade in 201 8 with a 0.1 6 margin of
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MATH302 1005 Spring 2026 - APEI Jeremy Clark - Week
5 Knowledge Check Homework Questions – Results with
100% accuracy (SCORED 100%)
x
Attempt 2 of 4
Written Jan 9, 2026 1 2:32 PM -Jan 9, 2026 1 :14 PM
Attempt Score 1
Overall Grade (Highest Attempt) 1
Question 1 point
There is no prior information about the proportion of Americans who support gun
control in 201 8. If we want to estimate 95% confidence interval for the true
proportion of Americans who support gun control in 201 8 with a 0.36 margin of
error, how many randomly selected Americans must be surveyed? Answer: (Round
up your answer to nearest whole number)
v Hide question 1 feedback
Z-Critical Value = I .96
n
Question 2 1 / I point
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A researcher would like to estimate the proportion of all children that have been
diagnosed with
Autism Spectrum Disorder (ASD) in their county. They are using 95% confidence
level and the CDC national estimate that 1 in 68 0.01 47 children are diagnosed with
ASD. What sample size should the researcher use to get a margin of error to be
within 2%? Round up to the nearest integer. Answer
V Hide question 2 feedback
Z-Critical Value - — NORM.S.lNV(.975) = 1 .96
Question 3 point The population standard deviation for the height of college
baseball players is 3.2 inches. If we want to estimate 90% confidence interval for the
population mean height of these players with a 0.7 margin of error, how many
randomly selected players must be surveyed? (Round up your answer to nearest
whole number) Answer: -51---
v Hide question 3 feedback
Z-Critical Value = NORM.S.lNV(.95) = I .645
Question 4 point
There is no prior information about the proportion of Americans who support free
trade in 201 8. If we want to estimate a 97.5% confidence interval for the true
proportion of Americans who support free trade in 201 8 with a 0.1 6 margin of
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