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Author Question: LetXbe a continuous random variable and letcbe a constant. Which of the following statements is true? (Read 70 times)

kckanistras

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on: Feb 26, 2023

Question 1

LetX = the time (in minutes) that a postal clerk spends with her customers. This time is known to have an exponential distribution with an average of 4 minutes. What is the probability that the clerk spends 4 to 5 minutes with a randomly selected customer?

◦

0.7135


◦

0.6321


◦

0.3456


◦

0.0814



Question 2

LetXbe a continuous random variable and letcbe a constant. Which of the following statements is true?

◦

The probability thatXassumes a value in the intervalX1toX2is the area under the probability density function betweenX1andX2.


◦

P(X=c) = 0.


◦

P(X ≤c) = P(X <c).


◦

All of these statements are true.

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Marked as best answer by kckanistras on Feb 26, 2023

KAyteeBee1129

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Reply #1 on: Feb 26, 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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kckanistras

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Reply 2 on: Feb 26, 2023
YES! Correct, THANKS for helping me on my review

lcapri7

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Reply 3 on: Yesterday
Excellent

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