The average price of a personal computer (PC) is $995. If the computer prices are approximately normally distributed and the variance is $8923. what is the z-score of the selected PC costing $1103? Only the final answer should be rounded-off to TWO decimal places. The table below shows thejoint probability distribution of two discrete variables X and Y. ----- ----- Find: P(X=2) Only the final answer should be roundedoff to TWO decimal places. The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean for this probability distribution. Only the final answer should be rounded-off to TWO decimal places. A shipment of 24 computer keyboards is rejected if4 are checked for defects and at least 1 is found to be defective. The probability that the shipment will be returned if there are actually 6 defective keyboards is . Use hypergeometric distribution. Only the nal answer should be rounded-off to TWO decimal places