The kilowatt/hour (koh) generated by a solar system of 12 panels from (12-1 p.m.), during the summer months, has a norma

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The kilowatt/hour (koh) generated by a solar system of 12 panelsfrom (12-1 p.m.), during the summer months, has a normaldistribution with mean 2.25 and a standard deviation of 0.5. If 10solar system of this kind are randomly sampled, find theprobability that the sample average is 3kwh
ii. the probability that the sample average is between 2.09 and2.41kwh
iii. state in which of these cases it is more reasonable toassume that X follows a normal distribution and explain why or whynot
iv. sample of size 2 comes from a population with normaldistribution (known variance)
v. Sample of size 10 comes from a population with normaldistribution (unknown variance)