I can’t figure out how to solve for the confidence level, I’m not sure if I’m plugging in the wrong numbers or missing a step B ReadiInorganic phosphorous is a naturally occurring element in all plants and animals, with concentrations increasing progressively up the food chain (fruit < vegetables < cereals < nuts < corpse). Geochemicalsurveys 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. TheHill of Tara is a very important archaeological site in Ireland. It is by legend the seat of Ireland's ancient high kingst. Independent random samples from two regions in Tara gave the following phosphorousmeasurements (ppm). Assume the population distributions of phosphorous are mound-shaped and symmetric for these two regions.Region I: x1 n1 = 12540 810 790 790 340 800890 860 820640 970720Region II: x2; n2 = 16750 870 700 810 965350 895 850635 955 710 890 520 650 280 993A USE SALT(a) Use a calculator with mean and standard deviation keys to calculate x1, S1, X2, and s2. (Round your answers to four decimal places.)X1=747 5S1 170 4073 ppmV ppmX2= 738 937552 = 212.1463V ppm(b) Let u be the population mean for x1 and let u, be the population mean for x2. Find an 85% confidence interval for u - 1z. (Round your answers to one decimal place.)lower limitX ppmupper limitX ppm(c) Explain what the confidence interval means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? At the 85% level of confidence, isone region more interesting than the other from a geochemical perspective?O Because the interval contains both positive and negative numbers, we can not say that one region is more interesting than the other.O Because the interval contains only positive numbers, we can say that region I is more interesting than region II.O Because the interval contains only negative numbers, we can say that region II is more interesting than region I.O We can not make any conclusions using this confidence interval.P Type here to search10:22 PM44°F依 dx11/3/2021hpA>"brt scdeletehomeendPg up6)$496&*7\8backspcenumlockhome

We want to find the 85% confidence interval

(b) Let u, be the population mean for x, and let u, be the population Tmean for x2. Find an 85% confidence interval for u - Hz. (Round your answers to one decimal place.) lower limit X ppm upper limit X ppm (c) Explain what the confidence interval means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? At the 85% level of confidence, is one region more interesting than the other from a geochemical perspective? O Because the Interval contains both positive and negative numbers, we can not say that one region is more interesting than the other. O Because the interval contains only positive numbers, we can say that region I is more interesting than region II. O Because the interval contains only negative numbers, we can say that region II is more interesting than region I. O We can not make any conclusions using this confidence interval. P Type here to search 10:22 PM 44°F 11/3/2021

(b) Let u, be the population mean for x, and let u, be the population Tmean for x2. Find an 85% confidence interval for u - Hz. (Round your answers to one decimal place.) lower limit X ppm upper limit X ppm (c) Explain what the confidence interval means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? At the 85% level of confidence, is one region more interesting than the other from a geochemical perspective? O Because the Interval contains both positive and negative numbers, we can not say that one region is more interesting than the other. O Because the interval contains only positive numbers, we can say that region I is more interesting than region II. O Because the interval contains only negative numbers, we can say that region II is more interesting than region I. O We can not make any conclusions using this confidence interval. P Type here to search 10:22 PM 44°F 11/3/2021

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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please answer the last three parts
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How do I find confidence levels
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