Which of the following Excel functions can be used to calculate the standard deviation of a data range? O-STDEVIATION(data range) O-STANDARDDEVIATION(data range) O-STDEV(data range) O-STD(data range) O-STANDARDDEV(data range) 3pts The Quality Control department of a manufacturing company wants to estimate the number of defective items in a production batch. In the past, the number of defective items per batch has been mound-shaped with a mean of 18 and a standard deviation of 3.8. Suppose the Quality Control department wants to find the probability that the number of defective items in a sample will be greater than 19. Identify the appropriate Excel statement. O NORMDIST(19,18,3.8,TRUE) O-1-NORMDIST(19,18,3.8,TRUE) O-1-NORMINV(19,18,3.8,TRUE) -NORMINV(19,18,3.8,TRUE) =NORMINV(19,18,3.8,FALSE) In a decision tree, a random or chance event is represented by: OA rhombus OA triangle OA square OA circle OA rectangle