Suppose that you wish to estimate the difference between mean pH measurements of rainfalls in two different locations, one in relatively unpolluted area and the other in an area subject to heavy air pollution. You want to be 95 % confident that the margin of error for the difference between mean pH of rainfalls in relatively unpolluted area and mean pH of rainfalls in an area subject to heavy air pollution will not exceed 0.1 pH. How many rainfalls (pH measurements) must be included in each sample? Assume that the variance of pH measurements in a relatively unpolluted area is equal to 2 o = 20, and the variance of pH measurements in an area subject to heavy pollution is equal to 2 ₁ = 0.25, and samples will be of equal size (n₁ = n₂ = n). It is supposed that values of pH in rainfalls are normally distributed in polluted and unpolluted areas. The number of rainfalls (pH measurements) that must be included in each sample is
Suppose that you wish to estimate the difference between mean pH measurements of rainfalls in two different locations, one in relatively unpolluted area and the other in an area subject to heavy air pollution. You want to be 95 % confident that the margin of error for the difference between mean pH of rainfalls in relatively unpolluted area and mean pH of rainfalls in an area subject to heavy air pollution will not exceed 0.1 pH. How many rainfalls (pH measurements) must be included in each sample? Assume that the variance of pH measurements in a relatively unpolluted area is equal to 2 o = 20, and the variance of pH measurements in an area subject to heavy pollution is equal to 2 ₁ = 0.25, and samples will be of equal size (n₁ = n₂ = n). It is supposed that values of pH in rainfalls are normally distributed in polluted and unpolluted areas. The number of rainfalls (pH measurements) that must be included in each sample is
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter2: Exponential, Logarithmic, And Trigonometric Functions
Section2.CR: Chapter 2 Review
Problem 111CR: Respiratory Rate Researchers have found that the 95 th percentile the value at which 95% of the data...
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![Suppose that you wish to estimate the difference between mean pH measurements of rainfalls
in two different locations, one in relatively unpolluted area and the other in an area subject to
heavy air pollution.
You want to be 95% confident that the margin of error for the difference between mean pH of
rainfalls in relatively unpolluted area and mean pH of rainfalls in an area subject to heavy air
pollution will not exceed 0.1 pH.
How many rainfalls (pH measurements) must be included in each sample?
Assume that the variance of pH measurements in a relatively unpolluted area is equal to
2
=
20, and the variance of pH measurements in an area subject to heavy pollution is equal to
2
= 0.25, and samples will be of equal size (n = n₂ = n).
2
It is supposed that values of pH in rainfalls are normally distributed in polluted and unpolluted areas.
The number of rainfalls (pH measurements) that must be included in each sample is](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F31b13744-2a7c-4c52-8a63-0a640293092a%2Febc17552-7c67-4ccf-9dc3-0305e9eedbfd%2Fxg33pft.jpeg&w=3840&q=75)
Transcribed Image Text:Suppose that you wish to estimate the difference between mean pH measurements of rainfalls
in two different locations, one in relatively unpolluted area and the other in an area subject to
heavy air pollution.
You want to be 95% confident that the margin of error for the difference between mean pH of
rainfalls in relatively unpolluted area and mean pH of rainfalls in an area subject to heavy air
pollution will not exceed 0.1 pH.
How many rainfalls (pH measurements) must be included in each sample?
Assume that the variance of pH measurements in a relatively unpolluted area is equal to
2
=
20, and the variance of pH measurements in an area subject to heavy pollution is equal to
2
= 0.25, and samples will be of equal size (n = n₂ = n).
2
It is supposed that values of pH in rainfalls are normally distributed in polluted and unpolluted areas.
The number of rainfalls (pH measurements) that must be included in each sample is
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