Which decimal is closest in value to the fraction below 1/9 ?a) 0.111b) .33333c) 0.7

Mathematics

2 answers:

frosja888 [35]3 years ago

7 0

1/9=0.11111.....
so the correct option is (a).

stellarik [79]3 years ago

4 0

Hello.

$1.9 = 0.111...$
It is a repeating decimal. Thus, your answer is A) 0.111

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From a July 2019 survey of 1186 randomly selected Americans ages 18-29, it was discovered that 248 of them vaped (used an e-ciga

jasenka [17]

Answer:

The 90% confidence interval is (0.1897, 0.2285).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$

For this problem, we have that:

From a July 2019 survey of 1186 randomly selected Americans ages 18-29, it was discovered that 248 of them vaped (used an e-cigarette) in the past week. This means that $n = 1186, \pi = \frac{248}{1186} = 0.2091$