Verizon 7:21 PM c @ 30% uestion 1 (4 points) Suppose you carry out a one-way ANO
ID: 3326914 • Letter: V
Question
Verizon 7:21 PM c @ 30% uestion 1 (4 points) Suppose you carry out a one-way ANOVA to test whether the mean selling prices of houses in t three sample means are as follows: City 1: S365,880 City 1: S365,900 City 1: S366,054 The p-value is 0.04 Part (a) Are significant? Justify your answer. Part (b) (2 points) Are the differences between these means of practical significance? Justify your answer hree cities are the same. The (2 points) the differences between these mea ns statistically Continued on p. 2. Queston 2 (3 points) The covariance between variables A and B is 14.73. The correlation coefficient between variables C and D is 0.78. Is it possible to tell which pair of variables is more strongly correlated? Explain your answer Question 3 3 points) A researcher would like to find out what makes people decide to start a family. He notices that in many cases, people buy a car seat for infants and then just a few weeks later their baby is born. Hence he suggests that the act of buying a car seat causes women to have babies. Do you agree that such causation exists? Explain your answer Question 4 (8 points) The following table shows the output of a regression of selected S&P; 500 companies' net income in billions of dollars (the dependent variable) on their sales in billions of dollars (the independent variable).Explanation / Answer
Solution:-
1) a) Since the p-value(0.04) is less than significance level(0.05). Hence differences between these means is statisrically significant.
b) The test is not statistically significant, The small difference is meaningless to this situation.
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