3 years ago

I etavidewifdwcvefoewf

Mathematics

2 answers:

azamat3 years ago

6 0

I’m not sure what that meant.

Trava [24]3 years ago

3 0

Answer:

cool

Step-by-step explanation:

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Describe one way in which the usage of vertex-edge graphs apply to you

LuckyWell [14K]

Answer:

you will be able to create and representations the vertex - edge graphs.

5 0

3 years ago

A trucking firm suspects that the mean lifetime of a certain tire it uses is more than 30,000 miles. To check the claim, the fir

grandymaker [24]

Answer:

We conclude that the lifetime of tires is less than 30,000 miles.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 30,000 miles

Sample mean, $\bar{x}$ = 29,400 miles

Sample size, n = 54

Alpha, α = 0.05

Population standard deviation, σ =1200 miles

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 30000\text{ miles}\\H_A: \mu < 30000\text{ miles}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{29400 - 30000}{\frac{1200}{\sqrt{54}} } = -3.6742$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, we conclude that the lifetime of tires is less than 30,000 miles.

4 0

3 years ago

I need help please ASAP!! I'm in the middle of a quiz!

bixtya [17]

Answer:

2 is the correct answer

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3 years ago

Betty weighs 150 pounds. During each week of the next month, she consumes 14,000 calories and burns 10,000 calories. At the end

sertanlavr [38]

Answer:About 154.5 pounds

Step-by-step explanation:

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3 years ago

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Bradbury scar caught 35 fish with his net 20 percent of the fish had to be thrown back into the sea because they were too small

Lerok [7]

7 fish were thrown back

6 0

3 years ago