Problem

Consider the probability distribution shown here: x–4–3–2–101234p(x).02.07.10.15.30.18.10...

Consider the probability distribution shown here:

x	–4	–3	–2	–1	0	1	2	3	4
p(x)	.02	.07	.10	.15	.30	.18	.10	.06	.02

a. Calculate μ, σ2, and σ.
b. Graph p(x). Locate μ, μ – 2σ, and μ + 2σ on the graph.
c. What is the probability that x will fall into the interval μ ± 2σ?

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Solutions For Problems in Chapter 4

1AE
1E
2AE
2E
3AE
3E

4AE
4E
5AE
5E
6AE
6E

7AE
7E
8AE
8E
9E
10E

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