A contractor desires to build new homes with fireplaces. He read the results that states that 80% of all home buyers wanted a fireplace. In order to test this figure, he selected a sample of 90 home buyers and found that 60 wanted a fireplace. At a = 0.02, should he arrive at the same conclusion as the survey? Construct a corresponding confidence interval for the population parameter.

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Q: I also Need help with part D please

A: The correlation coefficient is 0.8137.

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A: GIVEN: 6 - x - x2  if x ≤ 32x - 5         if x > 3

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Q: Please solution for part G,  Thanks!

A: (g) n=50, P(∑i=150Xi<1124.54)=?

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Q: could you provide an example please?

A: Let us take:  u→=0, 0, 0v→=1, 2, 3w→=4, 5, 6

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Q: Can you draw a table so I can understand better

A: Start with a in the column one and make possible pairs. Then go with b, then c and then so on.

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A: 1,2,3....,23,24,25 are called element of set S.  Hence, set S has 25 element which mean n(S) = 25…

Q: following up for the solutions to part b! thank you!

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