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Statistics Assignment | Professional Writing Services

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January 21st, 2020

A real estate agent believes that the average closing cost of purchasing a new home is at least $6,500 over the purchase price. To prove this, she randomly selects 40 new homes sales and finds that the average closing costs are $6,600. The standard deviation is equal to $120. At the .05 level of significance, is her claim correct?

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What is the z or t score?

Question 1 options:

A)

1.96

B)

2.575

C)

1.684

D)

1.645

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