Math Solutions

[Solution] a) Fill in the missing value so that the following table represents a probability distribution. X 0 1 2 3 4 P(x) 0.24 0.12 0.31 0.15 b) What is

Question: a) Fill in the missing value so that the following table represents a probability distribution.

X 0 1 2 3 4
P(x) 0.24 0.12 0.31 0.15

b) What is the z-score for a 95% confidence level?

c)What is the z-score for a 90% confidence level?

d)What is the critical value for a small sample (n <30) for a two-tailed test when \[\alpha =0.02\] ?

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