A manufacturer of metal pistons finds that on average, 7/12 of his pistons are rejected because they are either oversize or undersized. Let Z- Number of pistons accepted with actual size. In a sample of 14 pistons manufactured, what is the probability t at least 2 pistons are accepted? OA. None of these OB. 0.9942 Ос. 0.0058 OD. 0.0586 Evaluate the variance of the distribution. OA. None of these OB.5.8 Ос. 3.4 OD. 6.5

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A manufacturer of metal pistons finds that on average, 7/12 of his pistons are rejected because they are either oversize or
undersized. Let Z- Number of pistons accepted with actual size. In a sample of 14 pistons manufactured, what is the probability that
at least 2 pistons are accepted?
OA. None of these
Ов. 0.9942
Ос. 0.0058
OD. 0.0586
Evaluate the variance of the distribution.
OA. None of these
OB.5.8
Ос. 3.4
OD. 6.5
Transcribed Image Text:A manufacturer of metal pistons finds that on average, 7/12 of his pistons are rejected because they are either oversize or undersized. Let Z- Number of pistons accepted with actual size. In a sample of 14 pistons manufactured, what is the probability that at least 2 pistons are accepted? OA. None of these Ов. 0.9942 Ос. 0.0058 OD. 0.0586 Evaluate the variance of the distribution. OA. None of these OB.5.8 Ос. 3.4 OD. 6.5
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