Statistics questions

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Tbyqvr

Mathematics

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Explanation & Answer

z between (11-25)/7 and (35/25)/7

= [ -2 to 10/7 ]

From z-tables (or excel):

P(z<-2) = 0.022750132

P(z<10/7) = 0.923436274

P(-2<z<10/7) = P(z<10/7) - P(z<-2)

= 0.923436274 - 0.022750132

= 0.9007


Anonymous
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