z= 2.5 ; x= 42.1 ; σ= 2
2.5= 42.1 - μ / 2 Determine μ
37.1
Multiply the second expression by 2:
5 = 84.2 - μ add μ to both sides:
5 + μ = 84.2 subtract 5 from both sides
μ = 84.2 - 5 =79.2
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Verified answer
37.1
Multiply the second expression by 2:
5 = 84.2 - μ add μ to both sides:
5 + μ = 84.2 subtract 5 from both sides
μ = 84.2 - 5 =79.2