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masha68 [24]
3 years ago
9

Each rectangle on the tile sweater is 6 inches wide and 4 inches high. It took 11 stitches to make 2 inches in width and 21 rows

to make 3 inches in height. How many stitches across and rows tall is each square?
Mathematics
1 answer:
allsm [11]3 years ago
3 0

Answer:

the answer is 800in

Step-by-step explanation:

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melisa1 [442]

Answer:

0.0073 < 0.05, which means that we reject the null hypothesis and conclude that the true proportion of interest is higher than 0.7.

Step-by-step explanation:

Conduct a test to determine whether the true proportion of interest is higher than 0.7.

This means that the null hypothesis is: H_{0}: p = 0.7

And the alternate hypothesis is: H_{a}: p > 0.7

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.7 is tested at the null hypothesis:

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The sociologist found that 375 of the 500 travelers randomly selected and interviewed indicated that the airports were safe.

This means that n = 500, X = \frac{375}{500} = 0.75

Value of the z-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.75 - 0.7}{\frac{\sqrt{0.7*0.3}}{\sqrt{350}}}

z = 2.44

P-value of the test:

Probability of z being larger than 2.44, that is, a proportion larger than 0.75.

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8 0
3 years ago
5y-3x=25<br> solve for y
pshichka [43]

Answer:

y=\frac{3}{5} x+5

Step-by-step explanation:

5y-3x=25\\\\5y-3x+3x=25+3x\\\\5y+0=3x+25\\\\5y=3x+25\\\\\frac{1}{5} (5y)=\frac{1}{5} (3x+25)\\\\y=\frac{1}{5}(3x)+\frac{1}{5}(25) \\\\y=\frac{3}{5}x+5

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