You believe that the price of Zoom Videoconferencing stock and the price of American Airlines stock will move in opposite directions. In order to test this relationship, we do a simple regression with the following variables: 1. A-dependent variable : month end price of American Airlines stock Z-independent variable: month end price of Zoom Videoconferencing stock Data from April 2019 through December 2020 (21 observations) is available Based on the data, we compute the following: Var (2) = 20927.702 Cov (AZ) = -899.153 E(A) = 20.790 E(Z) = 187.530 Std Error of Estimate = 6.088 TSS = 1476.830 Consider the equation A = b + bi Z+ E Based on the numbers given above, complete the following table a. Variable Estimate Std error t-statistic Slope b .00941 Constant b 2.2088 R-square N/A N/A F statistic N/A N/A b. Are the coefficients (slope and/or constant) significant at the.05 level?

It takes a while for new factory workers to master a complex assembly proces. During thre first month new employees wor, the company tracks the number of days the have been on the job and the length of time it rtakes them to complete assembly. The correlation is most likely to be what?

The degrees of freedom of correlation test is determined by what?

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