Need Help with Probability

Statistics
Tutor: None Selected Time limit: 1 Day

On Average, 5.4 shoplifting incidents occur per week at an electronics store. Find the probability that exactly 3 such incidents will occur during a given week at this store. 

May 12th, 2015

the answer is 0.119 ...........................................

May 12th, 2015

Cn you break it down? 

May 12th, 2015

sure just a sec


May 13th, 2015

The prob. of getting exactly 3 occurrences of an event with a mean rate of success of 5.4 is 0.119 or 11.9 %.
  • e: A constant equal to approximately 2.71828. (Actually, e is the base of the natural logarithm system.)
  • μ: The mean number of successes that occur in a specified region.
  • x: The actual number of successes that occur in a specified region.
  • P(x; μ) = (e) (μx) / x!
Plug it in:
  • P(x; μ) = (e-5.4) (5.43) / 3!= 0.118533=0.119

May 13th, 2015

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May 12th, 2015
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May 12th, 2015
Dec 9th, 2016
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