## Answers

Using standard normal table,

P(Z > z) = 15%

= 1 - P(Z < z) = 0.15

= P(Z < z ) = 1 - 0.15

= P(Z < z ) = 0.85

z =1.04 (using standard normal (Z) table )

Using z-score formula = raw score

x = z * +

x= 1.04 * 20+80

x= 100.8

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