The following data represent the daily demand ( v in thousands of units) and the unit price ( x in dollars) for a product. (a) Compute the sample covariance for the above data. Interpret the sample covariance. Since the covariance is zero, it indicates a positive relationship between x and y. Since the covariance is negative, it indicates a negative relationship between x and y. Since the covariance is negative, it indicates no relationship between x and y. Since the covariance is zero, it indicates no relationship between x and y. Since the covariance is positive, it indicates a positive relationship between x and y. (b) Compute the sample correlation coefficient. (Round your answer to three decimal places.) (a) Compute the sample covariance for the above data. Interpret the sample covariance. Since the covariance is zero, it indicates a positive relationship between x and y. Since the covariance is negative, it indicates a negative relationship between x and y. Since the covariance is negative, it indicates no relationship between x and y. Since the covariance is zero, it indicates no relationship between x and y. Since the covariance is positive, it indicates a positive relationship between x and y. (b) Compute the sample correlation coefficient. (Round your answer to three decimal places.) Interpret the sample correlation coefficient. There is no relationship between x and y. There is a strong negative relationship between x and y. There is a weak negative relationship between x and y. There is a strong positive relationship between x and y. There is a weak positive relationship between x and y