What is the probability that a random sample

Assignment Help Civil Engineering
Reference no: EM13211134

The most famous geyser in the world, Old Faithful in Yellowstone National Park, has a mean time between eruptions of 85 minutes. If the interval of time between eruptions is normally distributed with standard deviation 21.25 minutes, answer the following questions:

i. What is the probability that a randomly selected time interval between eruptions is longer than 95 minutes?

2. What is the probability that a random sample of 20 time intervals between eruptions has a mean longer than 95 minutes?

 

Reference no: EM13211134

Questions Cloud

Weighted average cost of equity : Calculate Company C's weighted average cost of preferred stock and calculate Company B's weighted average cost of equity
What is the efficiency of the device : If a mechanical device requires 450J of work to do 310J of work in lifting what is the efficiency of the device?
How do the crack behaves under the compression : how do the crack behaves under the compression of a concrete cubes under friction between the plates and specimen with stress strain diagram?
Explain what is the dose in rads to the animal : what is the dose in rads to the animal in the first 4.0 hours following the ingestion of the radioactive material?
What is the probability that a random sample : What is the probability that a random sample of 20 time intervals between eruptions has a mean longer than 95 minutes?
Explain acid-catalyzed condensation of a molecule : With acid-catalyzed condensation of a molecule with two aldehyde groups that is suitable for forming 5- or 6-membered rings, are both carbonyls protonated right away at the same time
What is the magnitude of the reaction : A ladder of mass 20 lbs. is leaned at an angle of 62 degrees against a smooth frictionless wall. What is the magnitude of the reaction (in lb-wt) where the ladder touches the wall?
Calculate uniform load : Calculate uniform load (in addition to self wt.) which will cause the section to begin cracking
Design a bar screen for a peak average flow : design a bar screen for a peak average flow of 0.46m3/s.you can consider reasonable assumptions.

Reviews

Write a Review

Civil Engineering Questions & Answers

  Select the sentence that is punctuated correctly

Select the sentence that is punctuated correctly.

  Formulate and solve the minimum weight design

consider the cantilever beam-mass system. formulate and solve the minimum weight design.

  A sewage treatment works stw

A sewage treatment works (STW) with 4 single-stage trickling filters has become organically overloaded due to the discharge of a biodegradable industrial effluent to the STW. This is causing effluent to pond on the surface of the filters.

  Specify the amount of convective acceleration

shaped nozzle such that the velocity along the center line of the flow increased from 1.5 m / s to 15 m / s at a distance of 37.5 m. specify the amount of convective acceleration at the beginning and end of the range.

  Standard deviation in lines of levels

Lines of levels were run requiring n instrument setups. If the rod reading for each backsight and foresight has a standard deviation δ what is the standard deviation in each of the following level lines?

  How many shopping trips will be made to each

If a logit model is estimated with coefficients of -0.543 for distance and 0.0165 for commercial space (in 1000 of ft^2), how many shopping trips will be made to each of the four shopping centers?

  Embankment for a highway

An embankment for a highway 30m wide & 1.5m in a compacted thickness is to be constructed from a sandy trucked from a borrow pit. the water contenet of the sandy soil in the borrow pit is 15%& its void ratio is 0.69.

  Determine the cod

Determine the COD, carbonaceous BOD, and nitrogenous oxygen demand of a 100 mg/L solution of urea (N2H4CO)

  Ethylene diamine tetra-acetic acid

Ethylene diamine tetra-acetic acid (EDTA) is a water-soluble compound that readily combines with metals, such as calcium, magnesium, and iron. The molecular formula for EDTA is C10N2O8H16. Assume one EDTA molecule complexes (associates with) one m..

  Cantilever mass-less beam

Consider a cantilever mass-less beam subjected to a concentrated mass at the tip of the beam. Assume, length L, flexural stiffness EI, and mass m.

  Ehermal conductivity of the radioactive wastes

The outer surface of the tank is cooled by air at 300 K with a heat transfer coefficient of 100 W/m2K. Determine the maximum temperature in the tank. Take the thermal conductivity of the wastes as 2.0 W/mK.

  Find the temperature stress produced

A rod of steel is 20 m long at a temperature of 200C. find the free expansion of the rod when the temperature is raised to 650C. Find the temperature stress produced

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd