The probability that the the sample mean would be less than x=132.25 will be calculated as follows:
z=(x-σ)/μ
μ- mean
σ- standard deviation
z=(132.25-138)/28=-0.2054
thus:
P(X≤x)=0.4207=42.07%
In question four (4), The chemical energy in the person's body is transformed into mechanical energy
<h3>What is Transformation of Energy?</h3>
Energy transformation, is known to be the process whereby energy is to another type.
Note that energy is regarded as the amount of power that is needed to carry out any kind of work (such as Lifting a book), etc.
Other answers are:
When they peddle the bike, causing the generator to rotate. Some energy in the bike wheel is lost to thermal energy.
When the person's chemical energy runs out, you can replenish it by feeding the person food.
Learn more about mechanical energy from
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