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Mercury in Freshwater Fish
Some experts believe that 20% of all freshwater fish in the United States have such high levels of mercury that they are dangerous to eat.
Suppose a fish market has 250 fish tested, and 60 of them have dangerous levels of mercury. Test the hypothesis that this sample is not from a population with 20% dangerous fish.
Use a significance level of 0.05. Comment on your conclusion: Are you saying that the percentage of dangerous fish is definitely 20%? Explain.
Prepare a bank reconciliation using Bobby Barnacles' Restaurant Supply Inc's information for August 31.
in a certain city there are 3000000 registered voters of whom 1200000 are democrats. a survey organization is about to
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At a party a large barrel is filled with 99 gag gifts and 1 diamond ring, all enclosed in identical boxes.
Modern aircraft engines are very reliable. One feature contributing to that reliability is the use of redundancy, where critical components are duplicated so that if one fails, the other will work.
A bank with branches in a large metropolitan area is considering opening its offices on Saturday, but it is uncertain whether customers will prefer (1) having walk-in hours onSaturday or (2) having extended branch hours during the week. Listed bel..
Three machines A, B, and C are used to produce the same part, and their outputs are collected in a single bin. Machine A produced 26% of the parts in the bin.
What a test of significance can answer. Explain whether a test of significance can answer each of the following questions.- Is the sample or experiment properly designed?
What are the means and standard deviations of the two sample proportions p^1 and p^2?- Use the addition rule for means of random variables: what is the mean of D = p^1 - p^2?
Design a compensator Gc(s) so that the steady-state tracking error to a ramp input is zero and the settling time (with a 2% criterion) is less than 5 seconds. Obtain the response of the closed-loop system to the input R(s) = 1/s2 and verify that t..
If the director wishes to estimate the mean number of admissions per 24-hour period to within 1 admission with 99% reliability, what size sample should she choose?
Last week was a basic introduction to Matlab. This week you will learn how to use three built-in functions (laplace, ilaplace and dsolve).Using the syms function
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