1. A n = 5 data points given in table (r is the predictor variable and y is the response variable). xy 12 1 -1 -1 5-2 2 3 4 Answer the following questions by hand calculation. Show your every detail of calculation! perform four step hypothesis tests whether x and y have a linear relationship. Let a = 0.05. • State Ho and Ha. • Calculate the test statistic. • Find and compare p-value to a OR Compare the test statistic to ta/2. State the conclusion.

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