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Difference between one-tailed and two-tailed tests

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1. What is the difference between one-tail and two-tail test? Explain by using your own example.

2) SUPPOSE BABSIE GENERATED THE FOLLOWING PROBABILITY DISTRIBUTION
X P(X)
5 0.25
7 0.3
10 0.25
12 0.05
15 0.15

A) Is this probability distribution discrete or continuous? Explain your reasoning.

B) Calculate the expected value of X. Show your work!!

C) Calculate the variance of X. Show your work!!!

D) Calculate the standard deviation. Show your work!!

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Solution Summary

The difference between one-tailed and two-tailed tests are examined. A probability distribution is generated to determine if the data is discrete or continuous.

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