Answer:
- <u><em>The standard deviation of the distribution is 1.5ºF.</em></u>
Explanation:
The known 68-95-99.7 rule, the empirical rule, states that, in a normal distribution 68% of the data are within one standard deviation from the mean, 95% of the data are within two standard deviations from the mean, and 99.7% are within three standard deviations:
- 68% ⇒ mean ± 1 standard deviation
- 95% ⇒ mean ± 2 standard deviations
- 99.7% ⇒ mean ± 3 standard deviation.
Hence, for the<em> approximately normal distribution of the daily high temperatures</em>,<em> with mean 86º</em>, and a range of <em>83ºF to 89ºF</em> for <em>95% of the data,</em> you can write:
- 86ºF ± 2 SD ⇒ 86ºF - 2 SD = 83ºF, and
- 86ºF ± 2 SD ⇒ 86ºF + 2SD = 89 ºF
Both equations will lead to the same result:
- 86ºF - 2 SD = 83ºF ⇒ 2 SD = 86ºF - 83ºF = 3ºF
SD = 3ºF / 2 = 1.5ºF
Also:
- 86ºF + 2SD = 89ºF ⇒ 2 SD = 89ºF - 86ºF = 3ºF
SD = 3ºF / 2 = 1.5ºF
Therefore, the standard deviation of the distribution is 1.5ºF.
There are lots of articles can be found on the internet about the negative impact of a democratic society to the citizens.
Find the links below:
1. The Green Garage Blog
Link: http://greengarageblog.org/16-significant-advantages-and-disadvantages-of-democracy
- It provided not only the disadvantage of democracy but also the advantages. According to this article, an example of disadvantage of democratic government is the misuse of public funds.
2. Mind Controversy
Link: http://www.mindcontroversy.com/disadvantages-democracy/
- Compare to the first article, here, it only tackles on the disadvantages. It points more on the possible corruption of the leaders.
3. Quora - Disadvantages of Democracy
Link: https://www.quora.com/What-are-the-disadvantages-of-democracy-1
- In this article, it provide answers to questions about disadvantages of democracy.
Answer:
Force
Explanation:
A description and measurement of the interaction between the two objects.A push or a pull.Forces always exist in pairs.
