Complete question;
<em>The distribution of lengths of salmon from a certain river is approximately normal with a standard deviation of 3.5 inches. If 10 percent of salmon are longer than 30 inches, which of the following is closest to the mean of the distribution? 26 inches A 28 inches B 30 inches C 33 inches D 34 inches</em>
Option B is correct. The value that is closest to the mean of the distribution is 30inches.
The formula for calculating the z-score is expressed as:

Given the following parameters

If 10 percent of salmon are longer than 30 inches, then:
Using the z table to get the value corresponding to the mean area 0.1.
- The required z-score will be -1.285
Substitute the resulting parameters into the formula to get the mean of the distribution.

Hence the value that is closest to the mean of the distribution is 30inches.
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Suppose that both firms start off not advertising. If firms act independently, what strategies will they end up choosing (option B) - Both firms will advertise)
<h3>What is an advert?</h3>
An advert is a mass or public media message with is designed to convince people to but into a product, service or an idea.
Hence, it is correct to state rival firms will end up advertising.
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Full Question:
Suppose that both firms start off not advertising. If firms act independently, what strategies will they end up choosing?
A) fizzo will choose not to advertise and Pop Hop will choose to advertise.
B) Both firms will advertise
C) Both firms will choose NOT to advertise
D) Fizzo will chose to advertise and Pop will choosenot to advertise.
The statement that best describes this political communication is : It is an example of propaganda.
<h3>What is political communication?</h3>
Political communication are information shared through various media, which have political context. They are connection concerning politics and citizens and the interaction modes that connect these groups to each other.
Political communication is important because it is a combination of different social sciences field which include political science and psychology science.
Hence, the statement that best describes this political communication is that It is an example of propaganda.
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Answer:
c) 200 additional D.A should be paid.
Explanation:
o calculate D.A first calculate inflation rate between 1980 and 1984.
Inflation Rate = × 100
Inflation Rate = × 100
= 25%
If 800 is the basic salary then D.A should be according to inflation rate 25% of the salary.
D.A = 800 ×
= 200
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This would be <span>B.competitive
A </span><span>competitive relationship is one where two or more organisms are challenging or competing with the others for survival.
Have a good day! =)</span>