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3 years ago

An object is moving at a speed of 6 miles per month. Express this speed in feet per hour.

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

3 0

Answer: 31,680 feet per hour.

Step-by-step explanation:

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Leokris [45]

The slope-intercept form is simply the way of writing the equation of a line so that the slope Often, this form is called y = mx + b
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3 years ago

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Convert 89/10 into a mixed number

kompoz [17]

Answer:

8 9/10

Step-by-step explanation:

89 goes into 10 8 times.

8x10=80.

89-80=9

So the answer is 8 9/10

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3 years ago

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An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

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3 years ago

Which of these is closest in size to 1? 0.95 1.05 0.960 1.040 0.95

Artemon [7]

Answer:

0.960

Step-by-step explanation:

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