15 samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared to standard gene fragments that can identify the species, 79% were mislabeled. a) Construct a 90% confidence interval for the proportion of all seafood sold in the country that is mislabeled or misidentified. b) Explain what your confidence interval says about seafood sold in the country. c) A government spokesperson claimed that the sample size was too small, relative to the billions of pieces of seafood sold each year, to generalize. Is this criticism valid? a) What is the 90% confidence interval? The 90% confidence interval is from nothing% to nothing%. (Round to one decimal place as needed.) b) What does the confidence interval say about seafood sold in the country? A. We are 90% confident that the interval captures the true proportion of all seafood sold in the country that is mislabeled. B. In 90% of samples of seafood sold in the country, the proportion that is mislabeled will be in the interval. C. There is a 90% chance that the true proportion of mislabeled seafood is in the interval. c) Is the government spokesperson's criticism valid? A. Yes, until another study produces a similar interval, the results cannot be generalized. B. Yes, the sample size must be at least 10% of the population, or the results cannot be generalized. C. No, as long as the necessary assumptions and conditions were met, the results can be generalized.

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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Question

515

samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared to standard gene fragments that can identify the species,

79%

were mislabeled.

a) Construct a

90%

confidence interval for the proportion of all seafood sold in the country that is mislabeled or misidentified.

b) Explain what your confidence interval says about seafood sold in the country.

c) A government spokesperson claimed that the sample size was too small, relative to the billions of pieces of seafood sold each year, to generalize. Is this criticism valid?

a) What is the

90%

confidence interval?

The

90%

confidence interval is from

nothing%

nothing%.

(Round to one decimal place as needed.)

b) What does the confidence interval say about seafood sold in the country?

We are

90%

confident that the interval captures the true proportion of all seafood sold in the country that is mislabeled.

90%

of samples of seafood sold in the country, the proportion that is mislabeled will be in the interval.

There is a

90%

chance that the true proportion of mislabeled seafood is in the interval.

c) Is the government spokesperson's criticism valid?

Yes, until another study produces a similar interval,

the results

cannot

be generalized.

Yes, the sample size must be at least 10% of the population, or the results cannot be generalized.

No, as long as the necessary assumptions and conditions were met, the results can be generalized.

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