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.
Answer:
The nervous system uses cell-communication by electrochemical signals that hormones, neurotransmitters or cytokines
Explanation:
Cell communication is vital to maintain internal environment thanks to homeostasis process which regulates the responses to internal and external stimulus. The functioning of cells depends on the electrochemical signals, these allows the communication and coordination among a group of cells of the tissue.
There are different type of loop-responses:
Negative Feedback Loops;
Reaction that causes a decrease in function, in response to some stimulus. The maintenance blood pressure, blood pH, oxygen/carbon dioxide balance, water balance (osmoregulation),calcium levels, among others are examples of negative feedback loops.
Positive Feedback Loops
Are involved in the amplification of the stimulus. D
Dan Pacholke is a prison administrator and reformer who has an experience of 30 years working in the sector. He has made numerous efforts throughout the years to improve the living conditions of confined prisoners, including giving them education programs.
When he says that the system has become very good at containing people who have fallen through all other social safety nets, he means that the there are very little efforts done in order to prevent people to incur in actions that would lead them to imprisonment. In other words, there is no proactive program to prevent people to commit more crimes but rather a reactive one that is prepared to receive people who have already done some sort of harm to society.
Answer:
a. each particle of matter vibrates about its normal rest position and along the axis of propagation,
b. Liquids
C. because liquids have the right amount of space between them for the wave to pass through quickly
Explanation:
