3 years ago

Write the number with the same value as 28 tens

1 answer:

posledela3 years ago

7 0

The answer should be 280 because 10×28= 280
20 tens equal 200
8 tens equal 80

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dalvyx [7]

The answer for this is (2,3)

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3 years ago

Nataly [62]

m m m mbl k m mmwnejekwkskzioz 2938839393 shush shush shush

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4 years ago

m_a_m_a [10]

D. 3~2 I'm guessing xD

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4 years ago

Mnenie [13.5K]

<h2>Answer with explanation:</h2>

As per given , we have

$\ovreline{x}=8.17$

$\sigma=2.2$

n= 64

a) Since , the sample mean is the point estimate for the population mean.

Therefore, the point estimate of the population mean = $\ovreline{x}=8.17$

b) Critical z-value for 99% confidence : $z_{\alpha/2}=2.576$

Confidence interval :

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$8.17\pm (2.576)\dfrac{2.2}{\sqrt{64}}$

$8.17\pm 0.7084$

$(8.17-0.7084,\ 8.17+0.7084)=(7.4616,\ 8.8784)\approx (7.46,\ 8.88)$

Hence, the 99 percent confidence interval for the population mean is between 7.46 and 8.88.

8 0

3 years ago

guapka [62]

It's 0.72 yards.
1 = 0.02
so 26*0.02=0.72

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4 years ago