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Author Question: A random variable x has the following probability distribution: x f(x) 0 0.08 1 0.17 2 0.45 3 0.25 4 ... (Read 47 times)

stephzh

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on: Jun 24, 2018
A random variable x has the following probability distribution: x f(x) 0 0.08 1 0.17 2 0.45 3 0.25 4 0.05
 a. Determine the expected value of x.
  b. Determine the variance.

Question 2

For a sample size of 21 at 95 confidence, the chi-square values needed for interval estimation are
 a. 9.591 and 34.170.
  b. 2.700 and 19.023.
  c. 8.260 and 37.566.
  d. 10.283 and 35.479.


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chinwesucks

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 2.02
b. 0.9396

Answer to Question 2

a


stephzh

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Reply 2 on: Jun 24, 2018
Wow, this really help

frankwu0507

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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