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Temka [501]
3 years ago
13

For a random sample of children from a school district in South​ Carolina, a regression analysis is conducted of yequalsamount s

pent on clothes in the past year​ (dollars) and xequalsyear in school. MINITAB reports the tabulated results for observations at xequals12. Predicted Values for New Observations NewObs Fit SEFit ​95% CI ​95% PI 1 448.0 10.6 ​(427,469) ​(101,795) a. Interpret the value listed under​ "Fit". Choose the correct answer below. A. Range of plausible values for the population mean. B. Standard error of predicted amount. C. Predicted amount. D. Range of plausible values for the individual observations.
Mathematics
1 answer:
AveGali [126]3 years ago
3 0

Answer:

Option B. Standard error of predicted amount.

Step-by-step explanation:

A standard error predicted amount will work best in this scenario. The data, when extracted from the standard mean, provides the most accurate presentation of the statistical data on question. By using the standard error, the variation from the central point can be determined.

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Step-by-step explanation:

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Step-by-step explanation:

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3x + 2 ≤ 14 <br><br>-5 + 2x &gt; 15 * <br><br>-2x + 4 ≥ 18 <br><br>HaLp i don't gets
sweet-ann [11.9K]

9514 1404 393

Answer:

  1. x ≤ 4
  2. x > 10
  3. x ≤ -7

Step-by-step explanation:

We're guessing you want to solve for x in each case. You do this in basically the same way you would solve an equation.

1. 3x +2 ≤ 14

  3x ≤ 12 . . . . . subtract 2

  x ≤ 4 . . . . . . . divide by 3

__

2. -5 +2x > 15

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3. -2x +4 ≥ 18

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  -14 ≥ 2x . . . . . . . subtract 18

  -7 ≥ x . . . . . . . . . divide by 2

_____

<em>Additional comment</em>

The statement above that the same methods for solving apply to both equations and inequalities has an exception. The exception is that some operations reverse the order of numbers, so make the inequality symbol reverse. The usual operations we're concerned with are <em>multiplication and division by a negative number</em>: -2 < -1; 2 > 1, for example. There are other such operations, but they tend to be used more rarely for inequalities.

You will note that we avoided division by -2 in the solution of the third inequality by adding 2x to both sides, effectively giving the variable term a positive coefficient. You will notice that also changes its relation to the inequality symbol, just as if we had left the term where it was and reversed the symbol: -2x ≥ 14 ⇔ -14 ≥ 2x ⇔ x ≤ -7 ⇔ -7 ≥ x

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