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MATH302 D009 Fall 2026 – APEI Miguel Goode -
Week 5 Test – Results with 100% accurate solutions
+ rationales
Attempt 1 of 2
Written Jan 2, 2026 10:55 AM - Jan 2, 2026 11:25 AM
Attempt Score - 95 %
Overall Grade (Highest Attempt) - 95 %
Question 1 point
The FDA regulates that fresh Albacore tuna fish that is consumed is allowed to
contain 0.82 ppm of mercury or less. A laboratory is estimating the amount of
mercury in tuna fish for a new company and needs to have a margin of error
within 0.023 ppm of mercury with 97% confidence. Assume the population
standard deviation is 0.143 ppm of mercury. What sample size is needed?
Round up to the nearest integer, do not include any decimals.
Answer: ___183___
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Z-Critical Value = NORM.S.INV(.985) = 2.17009 n
=
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Question 2 point
The population standard deviation for the height of college baseball players is
3.0 inches. If we want to estimate 95% confidence interval for the population
mean height of these players with a 0.68 margin of error, how many randomly
selected players must be surveyed? (Round up your answer to nearest whole
number, do not include any decimals) Answer: ___75___
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Z-Critical Value = NORM.S.INV(.975) = 1.96 n
=
Question 3 point The population standard deviation for the height of college
basketball players is 3.4 inches. If we want to estimate 99% confidence interval for
the population mean height of these players with a 0.43 margin of error, how many
randomly selected players must be surveyed? (Round up your answer to nearest
whole number, do not include any decimals) Answer: ___415___
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Z-Critical Value = NORM.SINV(.995) = 2.575 n
=
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MATH302 D009 Fall 2026 – APEI Miguel Goode -
Week 5 Test – Results with 100% accurate solutions
+ rationales
Attempt 1 of 2
Written Jan 2, 2026 10:55 AM - Jan 2, 2026 11:25 AM
Attempt Score - 95 %
Overall Grade (Highest Attempt) - 95 %
Question 1 point
The FDA regulates that fresh Albacore tuna fish that is consumed is allowed to
contain 0.82 ppm of mercury or less. A laboratory is estimating the amount of
mercury in tuna fish for a new company and needs to have a margin of error
within 0.023 ppm of mercury with 97% confidence. Assume the population
standard deviation is 0.143 ppm of mercury. What sample size is needed?
Round up to the nearest integer, do not include any decimals.
Answer: ___183___
Hide ques on 1 feedback
Feedback
Z-Critical Value = NORM.S.INV(.985) = 2.17009 n
=
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Question 2 point
The population standard deviation for the height of college baseball players is
3.0 inches. If we want to estimate 95% confidence interval for the population
mean height of these players with a 0.68 margin of error, how many randomly
selected players must be surveyed? (Round up your answer to nearest whole
number, do not include any decimals) Answer: ___75___
Hide ques on 2 feedback
Feedback
Z-Critical Value = NORM.S.INV(.975) = 1.96 n
=
Question 3 point The population standard deviation for the height of college
basketball players is 3.4 inches. If we want to estimate 99% confidence interval for
the population mean height of these players with a 0.43 margin of error, how many
randomly selected players must be surveyed? (Round up your answer to nearest
whole number, do not include any decimals) Answer: ___415___
Hide ques on 3 feedback
Feedback
Z-Critical Value = NORM.SINV(.995) = 2.575 n
=
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