3 years ago

The work of a student to solve a set of equations is shown:

1 answer:

6 0

Error in step 2

Step 2: –7y = 16 – 2z [Equation A in Step 1 is simplified.]
(forgot to multiply -7 on the right side)

should be
Step 2: –7y = -112 + 14z [Equation A in Step 1 is simplified.]

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Find the margin of error for a 90% confidence interval when the standard deviation is LaTeX: \sigma= 50????=50 and LaTeX: n = 25

Murrr4er [49]

Answer:

The margin of error for a 90% confidence interval is 16.4

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 25

Standard deviation = 50

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Margin of error =

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Putting the values, we get,

$1.64\times \dfrac{50}{\sqrt{25}} = 16.4$

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ruslelena [56]

Ax + 32 = 6
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a a

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a

x = -26
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a

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Answer:

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Step-by-step explanation:

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Answer:

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