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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi
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A flywheel is attached to a crankshaft by 12 bolts,

Chapter 2, Problem 20E

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QUESTION:

A flywheel is attached to a crankshaft by 12 bolts, numbered 1 through 12. Each bolt is checked to determine whether it is torqued correctly. Let A be the event that all the bolts are torqued correctly, let B be the event that the #3 bolt is not torqued correctly, let C be the event that exactly one bolt is not torqued correctly, and let D be the event that bolts #5 and #8 are torqued correctly. State whether each of the following pairs of events is mutually exclusive.

a. A and B

b. B and D

c. C and D

d. B and C

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QUESTION:

A flywheel is attached to a crankshaft by 12 bolts, numbered 1 through 12. Each bolt is checked to determine whether it is torqued correctly. Let A be the event that all the bolts are torqued correctly, let B be the event that the #3 bolt is not torqued correctly, let C be the event that exactly one bolt is not torqued correctly, and let D be the event that bolts #5 and #8 are torqued correctly. State whether each of the following pairs of events is mutually exclusive.

a. A and B

b. B and D

c. C and D

d. B and C

ANSWER:

Answer

Step 1 of 5

A flywheel is attached to a crankshaft by 12 bolts

Let A be the event that all the bolts are torqued correctly

Let B be the event that #3 bolt is not torqued correctly

Let C be the event that exactly one bolt is not torqued correctly

Let D be the event that #5 and #8 bolts are torqued correctly

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