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2 years ago

7

the cross of a water bin is shaped like a trapezoid. the base of the trapezoid are 22 feet and 4 feet long. it has a area of 26

square feet. what is the height of the cross section?

1 answer:

Rzqust [24]2 years ago

4 0

Just sayin' you shouldn't use up all ur points on one question

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Describe a situation you’re familiar with where one quantity changes constantly in relation to another

Crank

Answer:

One such situation is the amount of money in excess you paid for an item and the amount of change you will get. Another such scenario would be the total numbers of hours with respect to the total number of days. With more days, there will be more time hence more hours.

Step-by-step explanation:

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3 years ago

The diagram below represents the back of a doghouse. If the perimeter of the doghouse is 445, what is the value of x?

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Answer:isisisisisjwjsusjsnss

Step-by-step explanation:

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2 years ago

What is the surface area of this design?

Mandarinka [93]

Answer:

440 in ^2 in the surface area

Step-by-step explanation:

Hope this helps

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2 years ago

A survey asked, "How many tattoos do you currently have on your body?" Of the 1211 males surveyed, 185 responded that they ha

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Step-by-step explanation:I think this is right but I don’t really understand

3 0

3 years ago

A study was conducted to compare the proportion of drivers in Boston and New York who wore seat belts while driving. Data were c

allochka39001 [22]

Answer:

a) The test statistic is $z = -2.51$

b) The pvalue is 0.0060.

Step-by-step explanation:

Question a:

Ha: pB < pNY

This means that the alternate hypothesis is rewritten as:

$H_a: p_{B} - p_{NY} < 0$

While the null hypothesis is:

$H_0: p_{B} - p_{NY} = 0$

The test statistic is:

$z = \frac{X - \mu}{s}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis and s is the standard error

pB = 0.581, pNY = 0.832

This means that $X = 0.581 - 0.832 = -0.251$

0 is tested at the null hypothesis:

This means that $\mu = 0$

Standard error = 0.1

This means that $s = 0.1$

Test statistic:

$z = \frac{X - \mu}{s}$

$z = \frac{-0.251 - 0}{0.1}$

$z = -2.51$

The test statistic is $z = -2.51$

Question b:

The pvalue is the probability of finding a proportion less than -0.251, that is, a difference of at least 0.251, which is the pvalue of Z = -2.51.

Looking at the z-table, Z = -2.51 has a pvalue of 0.0060

The pvalue is 0.0060.

5 0

3 years ago