Use information below to answer the following 5 questions:
The chair of the operations management department at Quality University wants to construct a p-chart for determining whether the four faculty teaching the basic P/OM course are under control with regard to the number of students who fail the course. Accordingly, he sampled 100 final grades from last year for each instructor, with the following results:
Instructor Number of Failures
Prof. A 13
Prof. B 0
Prof. C 11
Prof. D 16
Question 46:
What is the sample proportion of failures (p) for Prof. D?
0
0.04
0.11
0.13
0.16
Question 47:
What is the estimate of the mean proportion of failures for these instructors (p)?
0.10
0.11
0.13
0.16
Question 48:
What is the estimate of the standard deviation of the sampling distribution for an instructor's sample proportion of failures?
0.0075
0.03
0.075
3
0.75
Question 49:
What are the 95% (z=2) upper and lower control limits for the p-chart?
0.95 and 0.05
0.13 and 0.07
0.1588 and 0.0412
0.16 and 0.04
0.1774 and 0.0226
Use Information below to answer the following 5 questions:
The chair of the operations management department at Quality University wants to construct a p-chart for determining whether four faculty teaching the basic P/OM course are under control with regard to the number of students who fail the course.
Instructor Number of Failures
Prof. A 13
Prof. B 0
Prof. C 11
Prof. D 16
1. What is the sample proportion of failures (p) for Prof. D?
0.04
0.10
0.13
0.16
Question 47:
2. What is the estimate of the mean proportion of failures for these instructors (p)?
0.10
0.11
0.13
0.16
Question 48:
3. What is the estimate of the standard deviation of the sampling distribution for an instructor's sample proportion of failures?
0.0075
0.03
0.075
0.75
Question 49:
4. What are the 95% (z=2) upper and lower control limits for the p-chart?
0.95 and 0.05
0.13 and 0.07
0.1588 and 0.0412
0.16 and 0.04
0.1774 and 0.0226