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Bumek [7]
2 years ago
10

A easy question help.

Mathematics
2 answers:
Citrus2011 [14]2 years ago
7 0

Answer:

170ft

Step-by-step explanation:

Natalka [10]2 years ago
5 0

Answer:

Step-by-step explanation:

i think its 170 25+30=55 55+55=160 but it's only 5 away so I could be wrong

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Write a division problem involving the division of a decimal by a whole number with an estimated quotient of 7.
timurjin [86]
Can u be more specific
6 0
3 years ago
Does the amount of hazardous material absorbed by the bodies of hazardous waste workers depend on gender? The level of lead in t
Eva8 [605]

Answer:

Correct option is (A).

Step-by-step explanation:

A two-sample <em>t</em>-test can be performed to determine whether the amount of hazardous material absorbed by the bodies of hazardous waste workers depend on gender or not.

Th hypothesis will be:

<em>H₀</em>: The amount absorbed by men is same as the amount absorbed by women, i.e. <em>μ</em>₁ = <em>μ</em>₂.

<em>Hₐ</em>: The amount absorbed by men is greater than the amount absorbed by women, i.e. <em>μ</em>₁ > <em>μ</em>₂.

The test statistic used is:

t=\frac{\bar x_{1}-\bar x_{2}-(\mu_{1}-\mu_{2})}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}

The decision rule to reject the null hypothesis based on the <em>p</em>-value is:

If the <em>p</em>-value of the test is less than the significance level <em>α</em> then the null hypothesis will be rejected. And if the <em>p</em>-value of the test is greater than the significance level <em>α</em> then the null hypothesis will not be rejected.

The <em>p</em>-value of the test is,

<em>p </em>- value = 0.0032

The commonly used significance levels are:

<em>α</em> = 0.01, 0.05 and 0.10.

The <em>p</em>-value of this test is less than all these <em>α</em>'s.

Thus, the null hypothesis will be rejected.

<u>Conclusion:</u>

As the null hypothesis is rejected, it can be concluded that the amount of leas absorbed by men is significantly greater than the amount absorbed by women.

Thus, the correct option is (A).

4 0
3 years ago
Conduct a hypothesis test to test the hypothesis that cloud seeding with silver nitrate increases rainfall. Use significance lev
masya89 [10]

Answer:

Paired t-test

Step-by-step explanation:

paired t–test is used  when there is one measurement variable and two nominal variables. The most common design is that one nominal variable represents individual organisms, while the other is "before" and "after" some treatment.

6 0
3 years ago
Can some one please help me
Inessa05 [86]

Answer:

8:1

Step-by-step explanation:

Don reads 8 pages a minute. Therefore the amount of pages he could read is 8 and the amount of time it takes is a minute

7 0
3 years ago
An angle is 6 more than five times its supplement. Find the measure of the largest angle.
Julli [10]
Supplementary angles add up to 180°


Angle y is the large angle: y= 5x+6

180= x+y
180= (5x+6) + x
180=6x+6
174=6x
x=29

180= y+29
y=151°
4 0
3 years ago
Read 2 more answers
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