Statistics Assignment | Professional Writing Services

Statistics Assignment | Professional Writing Services

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?

 
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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