Assume that adults have IQ scores that are normally distributed with a mean of u =...

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Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a standard deviation o = 15. Find

math Statistics-And-Probability

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Answer 1

Answer #1

P[X< 120 ]

$= P[Z<\frac{ 120 - 105 }{ 15 }]$

= P[Z< 1 ]

=0.8413.................by using Z table.

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Answer 2

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