Farm-grown fish are becoming very popular in supermarkets because of their lower cost relative to fish caught in rivers or oceans. One concern that is being closely monitored isthe level of carcinogens in farm-grown fish from insecticides used on the farms. The mean "safe level" concentration for farm-grown salmon set by the Environmental ProtectionAgency for a carcinogen called mirex is 0.08 ppm. It is also known that 10% of the farms in a particular region will fail EPA tests for acceptable levels of mirex in farm-grownsalmon. Show your work for the following questions.1. In its enforcement of acceptable levels of mirex in farm-grown salmon, suppose the EPA tests the mirex concentrations in salmon at five farms. What is the probability thatfour farms will fail the test? Keep five decimal places.2. What is the probability that four or more farms will fail the test? Keep five decimal places.3. What is the probability that at least one farm will fail the test? Keep three decimal places.4. What is the probability that all farms pass the test? Keep three decimal places.5. Now suppose the EPA tests the mirex concentrations in salmon at 50 farms every year. How many farms can be expected to fail the test on average?

Given information: P(Fail) =10%=10100=0.10

Answered: Farm-grown fish are becoming very…

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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On occasion, medical studies need to model the proportion of the population that has a disease and compare that to observed frequencies of the disease actually occurring. Suppose the end-stage renal failure in south-west Wales was collected for different age groups. Do the data in the table show that the observed frequencies are in agreement with proportion of people in each age group? Test at the 1% level. Renal Failure Frequencies Age group 16-29 30-44 45-59 60-74 75+ Total Observed Frequencies 125 152 134 124 48 583 Expected Proportion 0.23 0.25 0.22 0.21 0.09 State the hypotheses.H0: The observed frequencies in agreement with proportion of people in each age group.Ha: The observed frequencies in agreement with proportion of people in each age group. Calculate the χ2 test statistic. Round expected values to two decimal places. Round χ2 to 3 decimal places.χ2 = Calculate the p-value. Round to 3 decimal places.p-value = State your decision.Since p-value α,…
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