What is the mean time between counts

Assignment Help Civil Engineering

Reference no: EM13564969

Suppose the counts recorded by a Geiger counter follow a Poisson process with an average of three counts per minute.

(a) What is the probability that there are no counts in a 30-second interval ?

(b) What is the probability that the first count occurs in less than 10 seconds?

(d) What is the mean time between counts?

(e) What is the standard deviation of the time between counts?

(f) Determine x, such that the probability that at least one count occurs before time x minutes is 0.95.

Reference no: EM13564969

Questions Cloud

What amount will you be able to withdraw each year : At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are counted in 20-s intervals, and vehicle counts are taken in 120 of these time intervals. It is noted that no cars arrive in 18 of these 120 in..

Calculate the drawdown at the well : A gravel-packed well with an effective diameter of 36 in is to be constructed in an aquifer with T = 2.6 x l04 gpd/ft and S = 2.3 x 10-5. The design flow of the well is 1000 gpm. Calculate the drawdown at the well

Find the bottom width and the depth of water channel : A simply supported beam carries with a span of 7.5 m carries a uniformly distributed load of 25 N/mm. if the maximum allowed deflection of the beam is 1/325 of its span, detemine the cross-sectional dimensions of the beam. assume the beam has a recta..

Determine the initial temperature and total enthalpy in the : A 10 kg of refrigerant R-134a at 300 kPa fills rigid container whose volume is 14 L. The container is then heated until the pressure is 600 kPa.

What is the mean time between counts : Suppose the counts recorded by a Geiger counter follow a Poisson process with an average of three counts per minute.

Find the bottom width and the depth of water channel : The rate of flow through a trapezoidal open channel is 20 m^3/s and the mean velocity of flow is 1m/s . the side slope is 1:1 and the bed slope is 1 in 5000. Assume Chezy's constant C as 60, find the bottom width and the depth of water channel.

Determine the thickness of the oil film assuming a linear : A solid cube with a side length of 0.4 ft and a weight of 110 lb slides down a smooth surface that is inclined at 45 degrees to the horizontal. The block slides on a film of oil with a viscosity of 1.85 x 10-2 lb-s/ft2. If the velocity of the block i..

What is the diameter of the capillary tube assuming it has : You are designing a new thermometer using Galinstan, an alloy of gallium, indium, and tin that is a liquid at normal living temperatures. The coefficcient of thermal expansion is 190*10^-6 (1/kelvin).

What percentage of the time will the through lane adjacent : A traffic engineer is trying to design a left turn bay on an EB approach to an intersection. The signal timing for left turns will have 10 seconds of “left turn only” green time and 50 seconds of red time each signal cycle. The green time will be suf..

User Account

All Pages