Determining areas under standard normal distribution curve

Reference no: EM1319417

Q1) Automotive Company gets a certain kind of gaskets from supplier in lots of 100 items each. From each such lot, Quality Control department of automotive company randomly selects 20 gaskets for testing. If 2 or more of the tested gaskets fails, whole lot is rejected and is sent back to supplier.

Supplier knows that single gasket may fail with probability of 0.05. Determine the probability that randomly selected lot would get rejected?

Q2) Determine 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

Reference no: EM1319417

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