It depends on what you are asking
The mean of the random variable w that represents the total amount won is; -$4.50
We are given quantity of chips inside the bag as;
- Number of Yellow chips = 6
Total number of chips = 20
Thus;
- P(Red chips) = 10/20 = 0.5
- P(Yellow Chips) = 6/20 = 0.3
Amount won from the selection of Red Chip = 0.5 * $5 = $2.5
Amount won from the selection blue Chip = 0.2 * $10 = $2
Amount won from selection of yellow chip = 0.3 * $20 = $6
Thus;
x = $2.5 + $2 + $6
x = $10.5
We are told that total amount won is gotten from;
w = x − 15
Thus;
w = 10.5 - 15
w = -$4.50
Read more on expected value at; brainly.com/question/24855677
A media query determines the capability of the mobile device, such as screen resolution, and directs browsers to CSS.
<h3>What is the usefulness of a media query d?</h3>
Media queries can be expressed as key part of responsive web design because they give room for a programmer to be able to create different layouts depending on the size of the viewport.
These queries is also essential in detecting other things as regards the the environment that the site is running on, like may be the user is is operating with touchscreen or may be he is using mouse.
Hence, A media query determines the capability of the mobile device, such as screen resolution, and directs browsers to CSS.
Learn more about media query on:
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According to the article, an estuary is a coastal body of water where the mouth of a river meets the sea.
<h3>What are the parts of the ecosystem found in estuaries?</h3>
It is the aquatic biome where a high-flow watercourse empties into the ocean, generally, it is found in areas with high-amplitude tides.
As to the living parts of the ecosystem found in estuaries, a great variety of fish and molluscs are concentrated.
On the other hand, the nonliving things of this ecosystem are low in salinity due to the fact that the sea water, when it meets the river water, loses a large percentage of it, it also offers an ideal temperature for the proliferation of life.
Therefore, we can conclude that according to the article, an estuary is a coastal body of water where the mouth of a river meets the sea.
Learn more about ecosystem found in estuaries here: brainly.com/question/2865934
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