Margin error of a sample mean is given by
where σ is the standard deviation,
is the critical value and n is the sample mean.
So beside the given standard deviation, we're supposed to know the sample size and critical value to answer this question.
<span>ABCD is an isosceles trapezoid with legs AB and CD
∴ AB = CD
</span>
<span>AB = 6y +5
</span>
<span>CD= 2y +1
∴ 6y + 5 = 2y + 1
6y - 2y = 5 - 1
4y = 4
∴ y = 4/4 = 1
</span>
(³⁰/₁₀₀)(²⁰/₁₀₀)(⁷/₁₂)
(³/₁₀)(¹/₅)(⁷/₁₂)
(¹/₁₀)(¹/₅)(⁷/₄)
⁷/₂₀₀
You can solve this using long division. The answer should end up being 2.3.
Always remember that unit labels cancel like number do and conversion problems will be simple....
64oz(lb/16oz)=4 lb