W~N(20,16) P(W<25) P(W<16) P(15<W<24) P(9<W<18). It is given that the variable X follows normal distribution such that X~N(15,4) find... P(X<18) P(X<12)

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Presentation transcript:

W~N(20,16) P(W<25) P(W<16) P(15<W<24) P(9<W<18)

It is given that the variable X follows normal distribution such that X~N(15,4) find... P(X<18) P(X<12) P(12<X<18)

Aims: To get more practice standardising and finding probabilities.

The main purpose of today’s lesson is to practise using standardising in questions where the info is given in a context.

Ex 4C p106 Q7-9 top of page Next Lesson: “Inverse” Normal problems. Finding data values from probability. Robert Adrian : US Mathematician who developed the Normal Probability Laws independently of Gauss.