# Question

An automatic machine produces 5.0-millimeter bolts at a high rate of speed. A quality control program has been initiated to control the number of defectives. The quality control inspector selects 50 bolts at random and determines how many are defective. The numbers of defectives in the first 10 samples are 3, 5, 0, 4, 1, 2, 6, 5, 7, and 7.

a. Design a p-chart. Insert the mean proportion defective, UCL, and LCL.

b. Plot the proportion defective for the first 10 samples on the chart.

c. Interpret the chart.

a. Design a p-chart. Insert the mean proportion defective, UCL, and LCL.

b. Plot the proportion defective for the first 10 samples on the chart.

c. Interpret the chart.

## Answer to relevant Questions

A process engineer is considering two sampling plans. In the first, a sample of 10 will be selected and the lot accepted if 3 or fewer are found defective. In the second, the sample size is 20 and the acceptance number is 5. ...Swiss Watches, Ltd. purchases watch stems for their watches in lots of 10,000. Their sampling plan calls for checking 20 stems, and if 3 or fewer stems are defective, the lot is accepted.a. Based on the sampling plan, what ...A student is taking two courses, history and math. The probability the student will pass the history course is .60, and the probability of passing the math course is .70. The probability of passing both is .50. What is the ...P (A1) 5 .60, P (A2) 5 .40, P(B1ƒA1) 5 .05, and P(B1ƒA2) 5 .10. Use Bayes’ theorem to determine P (A1ƒB1).The first card selected from a standard 52-card deck is a king.a. If it is returned to the deck, what is the probability that a king will be drawn on the second selection?b. If the king is not replaced, what is the ...Post your question

0