Inorganic phosphorous is a naturally occurring element in all plants and animals, with concentrations increasing progressively up the food chain (fruit < vegetables < cereaisenuts < corpse). Geochemical surveys take soil samples to determine phosphorous content (in ppm, parts per million). A high phosphorous content may or may not indicate anancient burial site, food storage site, or even a garbage dump. Independent random samples from two regions gave the following phosphorous measurements (in ppm).Assume the distribution of phosphorous is mound-shaped and symmetric for these two regions.Region It x n, 158571,551 1,2308751,080 2,330 1,850 1,8602,340 1,0809101,130 1,450 1,2601,010Region III xi n 14542 B061,230 1,7707909601,650 860890 640 1,180 1,160 1,050 1,020A USE SALT(a) Use a caiculator with mean and standard deviation keys to verify that a and s (Round your answers to four decimal places.)ppmppmppmppm(b) Let , be the population mean for x, and let be the population mean for . Find an 80% confidence interval for -. (Round your answers to ane decimal place.)lower limitX pomupper imaX ppm

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For Region 1 : N: 15 Sum, Σx: 20813 Mean, x̄1 = Σx/N 1387.5333 Standard Deviation, s1 =…

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(a) Use a calculator with mean and standard deviation keys to verity that N and (Round your answers to four decimal places.) ppm pom pom ppm () Let , be the population mean for , and tet be the population mean for Fnd an Bo contdence interval for a, (Meund your answers to ane decimal place) lower limit X pom upper im X ppm

(a) Use a calculator with mean and standard deviation keys to verity that N and (Round your answers to four decimal places.) ppm pom pom ppm () Let , be the population mean for , and tet be the population mean for Fnd an Bo contdence interval for a, (Meund your answers to ane decimal place) lower limit X pom upper im X ppm

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

Inorganic phosphorous is a naturally occurring element in all plants and animals, with concentrations increasing progressively up the food chain (fruit < vegetables < cereaise
nuts < corpse). Geochemical surveys take soil samples to determine phosphorous content (in ppm, parts per million). A high phosphorous content may or may not indicate an
ancient burial site, food storage site, or even a garbage dump. Independent random samples from two regions gave the following phosphorous measurements (in ppm).
Assume the distribution of phosphorous is mound-shaped and symmetric for these two regions.
Region It x n, 15
857
1,551 1,230
875
1,080 2,330 1,850 1,860
2,340 1,080
910
1,130 1,450 1,260
1,010
Region III xi n 14
542 B06
1,230 1,770
790
960
1,650 860
890 640 1,180 1,160 1,050 1,020
A USE SALT
(a) Use a caiculator with mean and standard deviation keys to verify that a and s (Round your answers to four decimal places.)
ppm
ppm
ppm
ppm
(b) Let , be the population mean for x, and let be the population mean for . Find an 80% confidence interval for -. (Round your answers to ane decimal place.)
lower limit
X pom
upper ima
X ppm

Expert Solution

Step 1

For Region 1 :

N:	15
Sum, Σx:	20813
Mean, x̄₁ = Σx/N	1387.5333

Standard Deviation, s₁= 498.171

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