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Author Question: Which of the following statements about a discrete random variable and its probability distribution are true? (Read 108 times)

dongbo

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on: Mar 25, 2023

Question 1

Which of the following is not a required condition for a discrete probability function?


◦

f(x) 0 for all values of x


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∑f(x) = 1 for all values of x


◦

∑f(x) = 0 for all values of x


◦

∑f(x) 1 for all values of x



Question 2

Which of the following statements about a discrete random variable and its probability distribution are true?


◦

Values of the random variable can never be negative.


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Some negative values of f(x) are allowed as long as ∑f(x) = 1.


◦

Values of f(x) must be greater than or equal to zero.


◦

The values of f(x) increase to a maximum point and then decrease.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by dongbo on Mar 25, 2023

MistyHubbard

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Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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dongbo

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Reply 2 on: Mar 25, 2023
Wow, this really help

alvinum

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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