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eduard
3 years ago
6

What is 3/20 as a decimal equivalent

Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
8 0
3/20 as a decimal equivalent is <span>0.15</span>
erastovalidia [21]3 years ago
3 0
The equivalent decimal is 0.15
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Set up a proportion here as the height over the shadow of the adult = to the height over the shadow of the baby. so you have 12/4.8 = height/2. cross multiply to get 12*2=4.8 times height, which is 24 = 4.8*height. divide both sides by 4.8 to get height = 5 feet
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3 years ago
Find the volume.<br> 12 m<br> 6 m<br> 8 m
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Step-by-step explanation:

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3 years ago
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A sample of 1500 computer chips revealed that 32% of the chips do not fail in the first 1000 hours of their use. The company's p
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Answer:

Yes, we have sufficient evidence at the 0.02 level to support the company's claim.

Step-by-step explanation:

We are given that a sample of 1500 computer chips revealed that 32% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed that above 29% do not fail in the first 1000 hours of their use.

Let Null Hypothesis, H_0 : p \leq 0.29  {means that less than or equal to 29% do not fail in the first 1000 hours of their use}

Alternate Hypothesis, H_1 : p > 0.29  {means that more than 29% do not fail in the first 1000 hours of their use}

The test statics that will be used here is One-sample proportions test;

          T.S. = \frac{\hat p -p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = proportion of chips that do not fail in the first 1000 hours of their use = 32%

            n = sample of chips = 1500

So, <u>test statistics</u> = \frac{0.32-0.29}{\sqrt{\frac{0.32(1-0.32)}{1500} } }

                              = 2.491

<em>Now, at 0.02 level of significance the z table gives critical value of 2.054. Since our test statistics is more than the critical value of z so we have sufficient evidence to reject null hypothesis as it fall in the rejection region.</em>

Therefore, we conclude that more than 29% do not fail in the first 1000 hours of their use which means we have sufficient evidence at the 0.02 level to support the company's claim.

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3 years ago
Why are whole numbers subset of intergers,but not subset of natrual numbers
Zepler [3.9K]

I think that whole numbers and natural numbers are the same set:- 1, 2, 3, 4 etc

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Express each ratio to the lowest term 3:18, 8:10, 6:15, 9:12, 4:12?​
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Answer:

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simplify the numbers

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