Question

A) 0.0010 B) 0,00000001 c 0.0068 0.0005 14) Refer to the crime rate scenario from the previous question. If you reject the null hypothesis, your conclusion is that A) the erime rates in all four regions are different. B) it is not true that the crime rates in all four regions are the same. C) the crime rates in all four regions are the same. the north and south crime rates are different than the east and west crime rates. 15) 15) The following scatterplot represents a sample drawn from a population of over 10,000 observations. The slope of the population relationship is A) unknown B) negative C) positive D) zero 16) Consider the sample regression equation:y 12+2x1-6%2 + 6x3 + 2x4 When x1 increases 1 unit and x2 increases 2 units, while x3 and x4 remain unchanged, what change 16) would you expect in the predicted y? A) Decrease by 2 C) Increase by 2 B) Decrease by 10 D) No change in the predicted y

Answer 1

15) B) negative

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16) B) Decrease by 10

(Reason is coefficient of x1 is +ve and x2 is -ve with weight 2and 6 respectively. So, 2*1 - 6*2= -10)