Ask Question
4 October, 16:33

The length of a text messaging conversation is normally distributed with a mean of 2 minutes and a standard deviation of. 5 minutes. What is the probability that a conversation lasts longer than 3 minutes?

0.043351

0.063748

0.02275

0.095424

+1
Answers (1)
  1. 4 October, 17:00
    0
    Let x be a random variable representing the length of a text messaging conversation, then

    P (x > 3) = 1 - P (x < 3) = 1 - P (z < (3 - 2) / 0.5) = 1 - P (z < 2) = 1 - 0.97725 = 0.02275
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The length of a text messaging conversation is normally distributed with a mean of 2 minutes and a standard deviation of. 5 minutes. What ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers