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    treetales's Avatar
    treetales Posts: 2, Reputation: 1
    New Member

    Jan 26, 2019, 04:35 AM
    Z Score value outside of Z Table
    We were given a problem today where Z is a standard normal random variable and we had to calculate: P(Z<6.0) and P(Z>6.0) The Z Table I have been using only has max values till 4. What do I do?

    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307

    Jan 26, 2019, 08:17 AM
    Note that p(z<4) is very close to 1, just 2/100,000 away. Hence p(z<6) is incredibly close to 1, probably closer than 1/10,000,000 and so for all practical purposes is equal to 1.

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