23. A real estate agent in the coastal area of Georgia wants to compare the variation in the selling price of? - coastal georgia real estate
23. A real estate agent in the coastal region of Georgia wants to sell to the change in sale prices of houses by the sea with two fifty nine blocks from the sea A sample of 21 houses on the beach during the year compared to the latter showed the deviation of the selling price was $ 45,600. A sample of 18 firms, were also sold last year, showed one to three blocks from the sea, that the standard deviation is $ 21,330. The significance level of .01, we conclude that there is more variation in the selling prices of houses overlooking the sea?
Friday, January 15, 2010
Coastal Georgia Real Estate 23. A Real Estate Agent In The Coastal Area Of Georgia Wants To Compare The Variation In The Selling Price Of?
Subscribe to:
Post Comments (Atom)
1 comments:
This is what I expected --
n1 = 21, S1 = 45.600, n2 = 18, S2 = 21,330
H0: S1 ≤ S2 vs. Ha: s1> s2
High-test z = 0.01
The critical z-score-= 2.3263
Decision rule: Reject H0 if the test Z-score> 2.3263
SE = sqrt [(S1 ^ 2 / 2N1) + (S2 ^ 2 / 2N2)] = sqrt [(45600 ^ 2 / 2 * 21) + (21330 ^ 2 / 2 * 18)] = 7883.31
S1 z = (- S2) / SE = (45.600-21.330) / 3.0786 = 7883.31
Since 3.0786> 2.3263 reject H0 and accept Ha
Conclusion: It seems more variation in the prices of the ocean, houses drudgery.
Post a Comment