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Novosadov [1.4K]
2 years ago
14

Which of the following decimals is equal to 3 1/40 ? Select TWO that apply

Mathematics
1 answer:
Mariana [72]2 years ago
7 0
<h3>Answers:  Choice B, Choice F</h3>

=======================================================

Explanation:

Use long division or your calculator to find that 1/40 = 0.025

Add on 3 to get 3 & 1/40 = 3 + 1/40 = 3 + 0.025 = 3.025 which is choice B

For some reason, your teacher has decided to add on a string of 0's onto this to form 3.025\overline{0} that horizontal line over the '0' means the 0's go on forever. So, 3.025 = 3.025\overline{0} = 3.025000000..., but we can always chop off the trailing zeros to make life simpler. I'm not sure why your teacher has decided to use this fairly strange format.

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Answer:

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b) There is no enough evidence to claim that disolved oxygen level is below 5 mg/l.

c) As the null hypothesis was not rejected, the only error we could have made is a Type II error.

This Type II error is made when fail to reject the null hypotesis even when the alternative hypothesis is true.

In this context, it would mean that the aquatic life is really at risk (dissolved oxygen levels below 5 mg/l), but because the sample results combined with its size were not giving enough evidence to prove the claim.

Step-by-step explanation:

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This P-value is bigger than the significance level, so the null hypothesis is failed to be rejected.

There is no enough evidence to claim that disolved oxygen level is below 5 mg/l.

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