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DedPeter [7]
3 years ago
7

The amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.4, 15.8, 15.4, 15.1, 15.8, 15.9, 15.8, 15.7 Wh

en constructing a 98% confidence interval for the mean amount of juice in all such bottles the Degree of Freedom used in this construction is
Mathematics
1 answer:
likoan [24]3 years ago
3 0

The answer is: " 7 " .

_______________________________________________________

Explanation:

_______________________________________________________

degrees of freedom (df) = n - 1 ;


n = sample size = 8 ;


n - 1 = 8 - 1 = 7 .

_______________________________________________________

The answer is: " 7 " .

_______________________________________________________

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decreases as the required rate of return increases.

Step-by-step explanation:

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Does dose anyone know how to solve this?
solniwko [45]

Answer:

Width of rectangle = 6 m

Length of rectangle = 11 m

Step-by-step explanation:

Let width of rectangle = w

Length of rectangle = 3w-7

Area of rectangle = 66 m²

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The formula used is: Area=Length \times Width

Putting values and finding w

Area=Length \times Width\\66=(3w-7)(w)\\66=3w^2-7w\\3w^2-7w-66=0\\

Solve using quadratic formula: w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

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Putting values and finding w

w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\w=\frac{-(-7)\pm\sqrt{(7)^2-4(3)(-66)}}{2(3)}\\w=\frac{7\pm\sqrt{49+792}}{6}\\w=\frac{7\pm\sqrt{841}}{6}\\w=\frac{7\pm29}{6}\\w=\frac{7+29}{6}\:,\:w=\frac{7-29}{6}\\w=6, w=-3.6

We get values of w as w=6 and w=-3.6

As we know width cannot be negative, so considering w = 6

So, Width = 6

Length = 3w-7 = 3(6)-7 = 18-7 = 11

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Length of rectangle = 11 m

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3 years ago
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What is the difference between a two-dimensional sketch and an isometric sketch?
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<span>I believe it is that a two-dimensional sketch doesn't include depth however the isometric sketch does</span>
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