Four student work to find an estimate for √27. Who os the closet to finding the true estimate
1 answer:
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A linear function is one whose formula can be written in the form
Ax + By = C where A, B, C are real numbers and A, B are not both 0. (This is standard form, too.)
"Cross multiply."
Subtract 12.
Subtract 2y.
This matches up with standard form with A = 3, B = -2, C = -20.
It's a linear function.
Ax + By = C where A, B, C are real numbers and A, B are not both 0. (This is standard form, too.)
"Cross multiply."
Subtract 12.
Subtract 2y.
This matches up with standard form with A = 3, B = -2, C = -20.
It's a linear function.
<h3>Answer: B) 31.348</h3>
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Work Shown:
We will never use the alpha = 0.05 value when computing the test statistic. So we can ignore alpha for this particular problem.
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n = 40 is the sample size.
s = 2.6 is the sample standard deviation
= sigma = 2.9 is the population standard deviation (ie the claimed standard deviation for all the pay phones)
Test Statistic for chi-square