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104f
Problem

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Textbook ExpertVerified Tutor
30 Oct 2021

Given information

As per the given question,

  • A consumer looking to buy a used red Miata car will call dealerships until she finds a dealership that carries the car.
  • She estimates the probability that any independent dealership will have the car will be %.
  • We are interested in the number of dealerships she must call.

 

To find:- Part (f). Find the probability that she must call three or four dealerships.

Step-by-step explanation

Step 1.

As per the given question,

  • We can calculate the probability as .
  • Using the Ti- plus calculator at , we get the value of .
  • Using the Ti- plus calculator at , we get the value of .
  • Hence, = or

                               = .

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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