A quality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are in control with regard to a particular quality attribute. Accordingly, she inspected 1,000 units of output from each machine in random samples, with the following results: Machine Number of defectives #1 23 #2 #3 #4 Normal distribution table is given below: Question 10 (5 points) What is the sample proportion of defectives for machine #1? (Round your answer to three decimal points in this format: x.xxx.) Question 11 (5 points) What is the average of defective proportions? (Round your answer to two decimal points in this format: x.xx.) Question 12 (5 points) What is the estimate of the standard deviation of the sampling distribution of sample proportions for this process? (Round your answer to four decimal points in this format: X.XXXX.) Question 13 (5 points) Compute the upper control limit for the p-chart for a Type l error of 0.025. (Round your answer to four decimal points in this format: x.xxxx.) Question 14 (5 points) Compute the lower control limit for the p-chart for a Type I error of 0.025. (Round your answer to four decimal points in this format: x.xxxx.) Question 15 (2.5 points) Which machine(s), if any, appear(s) to be out-of-control for process proportion of defectives? O none of the machines O machines #2 and #3 O machine #4 O machines #3 and #4 O machine #3