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Mazyrski [523]
2 years ago
8

Jan notes that 6 out of every 18 cars that pass her on the

Mathematics
1 answer:
ipn [44]2 years ago
7 0

Answer:

B) 18

Step-by-step explanation:

6 out of 18 is 6/18 = 1/3

1/3 x 54 = 18

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Some1 HELP!! PLZ<br><br> Which table shows a decreasing linear relationship?
Rufina [12.5K]

Answer:

The 4th one.  

Step-by-step explanation:

On all the tables x and y are always increasing, except for the 4th one where the y is decreasing.  

5 0
3 years ago
Read 2 more answers
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past
Minchanka [31]
<h2><u>Answer with explanation</u>:</h2>

Let \mu be the distance traveled by deluxe tire .

As per given , we have

Null hypothesis : H_0 : \mu \geq50000

Alternative hypothesis : H_a : \mu

Since H_a is left-tailed and population standard deviation is known, thus we should perform left-tailed z-test.

Test statistic : z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

where, n= sample size

\overline{x}= sample mean

\mu= Population mean

s=sample standard deviation

For n= 31,\ \sigma=8000,\ \overline{x}=46,800\ \&\ s=46,800, we have

z=\dfrac{46800-50000}{\dfrac{8000}{\sqrt{31}}}=-2.23

By using z-value table,

P-value for left tailed test : P(z≤-2.23)=1-P(z<2.23)   [∵P(Z≤-z)=1-P(Z≤z)]

=1-0.9871=0.0129

 Decision : Since p value (0.0129) < significance level  (0.05), so we reject the null hypothesis .

[We reject the null hypothesis when p-value is less than the significance level .]

Conclusion : We do not have enough evidence at 0.05 significance level to support the claim that t its deluxe tire averages at least 50,000 miles before it needs to be replaced.

4 0
3 years ago
Find the volume of the pyramid (round to hundreths place) _______ft^3
wlad13 [49]

Answer:

I got 5ft

Step-by-step explanation:

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Answer:

ELHLADOE

Step-by-step explanation:

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3 years ago
Help with one last math question <br> thank u
Vitek1552 [10]
It has to be the last one, D. I did it over 3 times to make sure.
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3 years ago
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