Exercise 1. Solve and Describe The scores of individual students on a national achievement test have a normal distribution with mean 21.2 and a standard deviation of 1.8. At ABC National High School, 80 students took the test. If the scores of the students at this school have the same distribution as the national scores, now will you describe the sampling distribution of the scores of these students? Assume that the population is infinite.

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A: One example of 3x3 matrix is 123456789. One example of 4x4 matrix is 12345678912346789.

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A: Explanation of the answer is as follows

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A: We will evaluate the limit as following.

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A: The objective of the question is evaluate the indefinite integral.

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A: Solved below

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Q: this

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Q: 0.8 0.6 0.4 0.2 (c) -0.3 -0.2 -0.1 0.1 0.2 0.3 0.3 0.2 0.1 0.2 0.4 0.8 10 -0.1 -0.2 (d) -0.3 x = 0.5…

A: 1.  x=0.5-0.5ty=1-t2 Answer is (b) 2. x=t3-0.7ty=1-t2answer is graph (c)

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A: since f(x, y) is a polynomial, it is continuous overthe given rectangular region D.So, f(x, y) has…

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