Answer:
(a)
(b)
(c) Smoking increases the time to fall asleep
Explanation:
Solving (a): The sample mean of each group
Mean is calculated as:
So, we have:
<u>Smokers</u>
and
Non Smokers
and
Solving (b): The standard deviation of each group
This is calculated as:
For smokers
So:
For non-smokers
So:
Solving (c): Impact of smoking on time to sleep
In (b), we have:
--- smokers
--- non-smokers
<em>Smokers have larger standard deviation (i.e. large variability) than non-smokers. This means that smokers require more time to fall asleep.</em>
Answer:
The development of diffusion dialysis for alkali separation
Explanation:
Diffusion Dialysis (DD) gives another option, perfect and planned strategy for corrosive and antacid recuperation. The most out standing preferences of DD are the perfect nature, low utilization of vitality, low establishment and working expense. Moreover, the integrations of DD (especially for corrosive recuperation frameworks) with other techniques can build the handling ability and effectiveness, so that the acids (even with low fixation) and the metal salts can be effectively recouped.
Different parameters will impact the proficiency of DD, such as film properties (particularly water content (WR) and fixed
gathering (CR)), assortment and grouping of waste arrangement, and the activity conditions (activity temperature, the stream rate, stream proportion). As needs be, critical contrasts have been accounted for for various DD frameworks: the "salt impact" is clear in the
HCl + chlorides DD frameworks, while in the H2SO4 + sulfates DD systems, the "salt impact" almost can't be watched; low retention
furthermore, high diffusivity in film are constantly seen in the solid corrosive arrangements, while in the powerless corrosive arrangement, the patterns are simply inverse; the "water assimilation" is moderately increasingly evident in the soluble base feed arrangement than that in the solid corrosive feed, and consequently the effectiveness of soluble base recuperation is lower.
Performing a series of mechanical or surgacal prosedures
Answer:
Media Access Control (MAC)
Explanation:
Every device that has a network interface card (NIC) contains a unique identifier called MAC address which differentiates it from other networking devices all over the world. It is also called a physical or hardware address. MAC addresses are integrated into the NIC of networking devices.
MAC addresses are a 12-digit hexadecimal number usually separated by a colon.
<em>Note that a 12-digit hexadecimal implies also that it is a 6-byte (or 48-bit) number.</em>
An example of a MAC address (in hexadecimal) is as follows;
00:0A:D8:12:E5:13