Statistics

posted by .

This is a stats problem.
Twenty percent of all trucks undergoing a certain inspection will fail the inspection. Assume that trucks are independently undergoing this inspection, one at a time. The expected number of trucks inspected before a truck fails inspection is...?

I belive this is a geometric probability problem, but I don't know how to solve it. Please help.

  • Statistics -

    This is a geometric probability problem. (Chapter 5)

    P = 0.20
    E(X) = 1/p = 1/0.2 = 5 trucks

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    I seem to be having problems setting up Linear Programming questions. For example: Kustom Kars does van conversions. The Custom conversion required 15 hours of shop time, 8 hours of painting time, and 1 hour of inspection time. The …
  2. Geometry

    A spherical storage tank has a diameter of 48 ft and is full of water. How many delivery trucks with cylindrical tanks measuring 8 ft in diameter and 10 ft long can be completely filled from the storage tank?
  3. home inspection

    in a property transaction the homeowner increasingly has a legal responsibility to?
  4. statistics

    Thirty percent of all automobiles undergoing a headlight inspection at a certain inspection station fail the inspection. Among 15 randomly selected cars, what is the probability that at most four fail tha inspection?
  5. statistics

    A quality-control program at a plastic bottle production line involves inspecting finished bottles for flaws such as microscopic holes. The proportion of bottles that actually have such a flaw is only 0.0002. If a bottle has a flaw, …
  6. Physics

    Two trucks that appear to be identical collide on an icy road. One was originally at rest. The trucks stick together and move off at more than half the original speed of the moving truck. What can you conclude about the contents of …
  7. ashford university

    Trucks are required to pass through a weighing station so that they can be checked for weight violations. Trucks arrive at the station at the rate of 40 an hour between 7:00 p.m. and 9:00 p.m. Currently two inspectors are on duty during …
  8. math

    Two trucks left buck's trucks traveling in opposite directions. One truck traveled at a rate of 70km/h, the other at 80km/h. After how many hours were the trucks 900km apart?
  9. econ

    Consider the market for trucks. Assume that the demand for trucks is given by 60 2 5 D Q P Y where P is price per truck and Y is the income of the buyers. The supply of trucks is given by 30 5 3 S Q P W where W is the price of all …
  10. Physics

    Two trucks that look the same collide. One was originally at rest. The trucks stick together and move off at more than half the original speed of the moving truck. What can you say about the contents of the two trucks?

More Similar Questions