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1.  An automotive company obtains a certain kind of gaskets from supplier in lots of 100 items each. From each such lot, the Quality Control department of automotive company randomly chooses 20 gaskets for testing. If two or more of tested gaskets fails, the whole lot is rejected and is sent back to supplier. 

The supplier knows that the single gasket might fail with probability of 0.05. Find out the probability that a randomly chosen lot would get rejected?

2.  Find out the following areas under standard Normal distribution curve:

a) Area to the left of (-1.12)

b) Area to the right of 2.1

c) Area between (-1.5) and 2.4

d) Area to the left of 2.3

e) Area to the right of 1.33

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921474

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