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.
In Harlem during the Harlem Renaissance .....
Answer:
C. interact frequently with the audience.
Explanation:
Presentation can be defined as an act of talking or speaking formally to an audience in order to explain an idea, piece of work, project, and product with the aid of multimedia resources or samples.
Students who want to create an effective presentation should interact frequently with the audience.
This ultimately implies that, to create an effective presentation, speakers are saddled with the responsibility of interacting more often with the audience by taking questions, making a joke, getting them to repeat informations loud at intervals etc.
Additionally, students are advised to be passionate and show enthusiasm during their presentation because it would enhance their ability to speak confidently and as such leading to an engaging presentation.
Answer:
B. seasonal temperature changes
Explanation:
A shallow lake can be dried up in the summer by extreme heat and can freeze over in the winter due to cold. Also I just took this test and this was the answer
Hello. You forgot to add the necessary text to answer this question. The text is:
“There are hundreds of children here…only they’re on the other side of the fence.’ A silence followed this remark, but it wasn’t like a normal silence where it just happens that no one is talking. It was a silence that was very noisy.”
Answer:
Bruno refers to the silence as "noisy" because the silence was able to convey a message.
I did not go through any situation where the silence was awkward and heavy.
Explanation:
When Bruno states that the silence was noisy, he means that although nothing was being said, the silence passed a message and that was not a common message, it was a very clear message, easily understandable and a tense, frightening and negative message.
Situations in which the silence becomes noisy, are uncomfortable, stressful and fearful situations that cause people's anxiety and fear.
