An article in Fire Technology investigated two different foam-expanding agents that can be used in the nozzles of firefighting spray equipment. Arandom sample of five observations with an aqueous film-forming foam (AFFF) had a standard deviation of 0.6. A random sample of five observations with alcohol-type concentrates (ATC) had a standard deviation 0.8. Suppose that if agent 1 produces a mean expansion that differs from the mean expansion of agent 2 by 1.5, you would like to reject the null hypothesis with probability at least 0.8. What sample size is required? Round your answer to the nearest integer (e.g. 9876). n =

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Q: could you explain the steps you took to get there ?

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Q: what is the answer to the problem

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Q: provide step-by-step reasoning please

A: The correct answer is D) All of the above are necessary.

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Q: Is there another solution?

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Q: Thank you very, very much! Could you help me with the last 3 parts?

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Q: Can you please evaluate part IV and V? Can part b and c also be completed?

A: We have find the integral of  4) ∫x4 exdx5) ∫x5 exdx

Q: could you pleas answer part c?

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Q: I do not understand the workings. Can it be handwritten and re submitted ?

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Q: can you explain part (c) in more clear/ simple steps? thank you

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A: Procedure for asking  a well formulated problem

Q: How to set up and solve?

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Q: Step-by-Step Answer 2. Thorough Explanation

A: From the graph  Vertex (1,1)

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A: The sample size is 8, sample mean is 14.9 and sample standard deviation is 1.33.

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A: So we have to fit the multiplication in the table.