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Luba_88 [7]
3 years ago
9

How do you write 16 tens

Mathematics
2 answers:
Sergio [31]3 years ago
5 0
"tens" is basically telling you "add a zero at the end", so " 16 tens" means "16 with a zero at the end" so the answer is 160. I hope that this helps!!! ;-)
Rzqust [24]3 years ago
4 0
16 tens = 16 x 10 = 160 ones
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9

Step-by-step explanation:

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3 years ago
A study claims that college students spend an average of 4 hours or less studying per day. A researcher wants to check if this c
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<h2>Answer with explanation:</h2>

Let \mu be the population mean.

By observing the given information, we have :-

H_0:\mu\leq4\\\\H_a:\mu>4

Since the alternative hypotheses is left tailed so the test is a right-tailed test.

We assume that the time spend by students per day is normally distributed.

Given : Sample size :  n=121 , since n>30 so we use z-test.

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Standard deviation : \sigma=1.2

Test statistic for population mean :-

z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

\Rightarrow\ z=\dfrac{3.15-4}{\dfrac{1.2}{\sqrt{121}}}\\\\\Rightarrow\ z=-7.79166666667\approx-7.79

Critical value (one-tailed) corresponds to the given significance level :-

z_{\alpha}=z_{0.1}=1.2816

Since the observed value of z (-7.79) is less than the critical value (1.2816) , so we do not reject the null hypothesis.

Hence, we conclude that we have enough evidence to accept that the college students spend an average of 4 hours or less studying per day.

4 0
3 years ago
What is the radius of a circle with circumference 56 inches
pochemuha

Answer:

The answer is 8.91 or 8.9

Step-by-step explanation:

SInce the circumference is 56, you'll divide it by pi or 3.14. It's as if you're doing it backwards, but not always. After you divide it by 3.14, you'll get your diameter, or in this case, 17.8. Divide the diameter by 2 because the diameter is twice the radius. Eventually your final answer will be 8.91 or 8.9

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2 years ago
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I'm guessing you're asking what shape do you get if you cut a hexagon is cut into sixths.
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6 0
3 years ago
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jek_recluse [69]

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3 0
3 years ago
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