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3 years ago

Jeremy drew a polygon with four right angles and four sides with the same length. Name all the polygons that he could have drawn

1 answer:

8 0

Square.

A square is a rectangle, so rectangle.

A rectangle is a parallelogram, so parallelogram.

Equilateral.

Also Rhombus.

(I think there may be others but these are the few I know)

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Pretty sure its 4 2/4 cups

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2 years ago

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2 years ago

In a previous year, 58% of females aged 15 and older lived alone. A sociologist tests whether this percentage is different tod

Gemiola [76]

Answer:

$z=\frac{0.565 -0.58}{\sqrt{\frac{0.58(1-0.58)}{600}}}=-0.744$

Since is a bilateral test the p value would be given by:

$p_v =2*P(z$

And since the p value is higher than the significance level we have enough evidence to conclude that the true proportion is not significantly different from 0.58

Step-by-step explanation:

Information given

n=600 represent the random sample selcted

X=339 represent the number of females aged 15 and older that living alone

$\hat p=\frac{339}{600}=0.565$ estimated proportion of females aged 15 and older that living alone

$p_o=0.58$ is the value that we want to check

$\alpha=0.01$ represent the significance level

z would represent the statistic

$p_$ represent the p value

Sytem of hypothesis

We want to check if the true proportion females aged 15 and older that living alone is significantly different from 0.58.:

Null hypothesis: $p=0.58$

Alternative hypothesis: $p \neq 0.58$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info given we got:

$z=\frac{0.565 -0.58}{\sqrt{\frac{0.58(1-0.58)}{600}}}=-0.744$

Since is a bilateral test the p value would be given by:

$p_v =2*P(z$

And since the p value is higher than the significance level we have enough evidence to conclude that the true proportion is not significantly different from 0.58

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3 years ago

How much pure acid should be mixed with 5 gallons of a 50% acid

Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

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3 years ago

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SCORPION-xisa [38]

I believe it’s 3 over c.

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3 years ago