2 years ago

Helpppppppppppppppppp

Mathematics

2 answers:

Vesnalui [34]2 years ago

6 0

The answer is on the bottom left

xxTIMURxx [149]2 years ago

4 0

Answer is C.

If its wrong im sorry but hope this helps.

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The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year

puteri [66]

Answer:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

Step-by-step explanation:

information given

$\bar X=10.6$ represent the sample mean

$\sigma=4.1$ represent the population standard deviation

$n=45$ sample size

$\mu_o =12$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:

Null hypothesis: $\mu \geq 10$

Alternative hypothesis: $\mu < 10$

The statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing the info given we got:

We can replace in formula (1) the info given like this:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

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What is Derricka's goal, in miles, for the total distance she will swim on Monday, Tuesday, and Wednesday? Show your work.

denpristay [2]

Answer:

there is no backgroung information?

Step-by-step explanation:

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2 years ago

Are American miles the same distance as U.K. miles?

MatroZZZ [7]

Answer:

yes they are

Step-by-step explanation:

because the metric system is the same

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What is the volume?<br>h<br>12 cm<br>Round your answer to the nearest tenths:

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Answer: So if its a sphere the answer its 7238.2.

If its a cylinder the answer is 371.7.

If its a triangular shape the answer is

123.9.

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3w-4z=8

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W=0
Z=-2
Is there a need for explanation?

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