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jek_recluse [69]

3 years ago

6

Can someone help me find some equations that represent proportional relationships in the real world and what they represent in t

he real world, I'm stumped.

1 answer:

otez555 [7]3 years ago

7 0

BBB. B to
I B. B. By b oy.

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Suppose we are testing the null hypothesis H 0 mu=20 and the alternative H iu =20 , normal population with sigma=6 A random samp

cupoosta [38]

Answer:

The value of the test statistic is $z = -1.5$

Step-by-step explanation:

The formula for the test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the statistic, $\mu$ is the mean, $\sigma$ is the standard deviation and n is the number of observations.

In this problem, we have that:

$\mu = 20, X = 17, \sigma = 6, n = 9$

So

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{17 - 20}{\frac{6}{\sqrt{3}}}$

$z = -1.5$

The value of the test statistic is $z = -1.5$

8 0

3 years ago

What is the answer please help

satela [25.4K]

0.9 seconds is the correct answer

7 0

3 years ago

If p = the mountain bike's original price in dollars, which algebraic expression

Anna [14]

Answer:

A

Step-by-step explanation:

125 is the amount of discount, so for example if p was 500 and discounted by 125 (p-125), you'd get 375(example of reduced price).

4 0

3 years ago

The length of a side of a square is √7 cm. What is the perimeter of the square? (Perimeter = the distance around the outside of

Sonja [21]

Since the square has 4 sides, you only have to add $\sqrt{7}$ four times.

The <span>perimeter of the square is: </span><span> $4 \cdot \sqrt{7} = 10.6$ cm </span>

4 0

3 years ago

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The sine of angle θ is 0.3.<br><br> What is cos(θ)?

Sergio [31]

The answer:

$\sqrt{9}1 /10$

Explanation to your question:

Since the sin of theta is 0.3, we can reasonably deduct that the opposite side to theta has a ration of 3 to 10 to that of the hypotenuse. Thus, the adjacent side to theta, using the pythagorean theorem, will be root91. Therefore, since the cosine of theta is the adjacent/hypotenuse, we get root 91/10

6 0

3 years ago