Question 952108
P( 10 ≤ x ≤ 26 ) = P( x ≤ 26 ) - P( x ≤ 10), then
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calculate z-value for x ≤ 10
z-value = (10 - 16) / 4.3 = −1.395348837
P( x ≤ 10) = 0.0823
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calculate z-value for x ≤ 26
z-value = ( 26 - 16) / 4.3 = 2.325581395
P( x ≤ 26 ) = 0.9898
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P( 10 ≤ x ≤ 26 ) = 0.9898 - 0.0823 = 0.9075