Exponential distribution with a mean time

Assignment Help Basic Statistics
Reference no: EM13981900

1. A recent survey published in BusinessWeek concludes that Gatorade commands an 83% share of the sports drink market versus 11% for Coca-Cola's PowerAde and 3% for Pepsi's All Sport. A market research ?rm wants to conduct a new taste test for which it needs Gatorade drinkers. Potential participants for the test are selected by random screening of drink users to ?nd Gatorade drinkers. What is the probability that

a. The ?rst randomly selected drinker quali?es.

b. Three soft drink users will have to be interviewed to ?nd the ?rst Gatorade drinker.

2. The time between customer arrivals at a bank has an exponential distribution with a mean time between arrivals of three minutes. If a customer just arrived, what is the probability that another customer will not arrive for at least two minutes?

3. Lightbulbs manufactured by a particular company have an exponentially distributed life with mean 100 hours.

a. What is the probability that the lightbulb I am now putting in will last at least 65 hours?

b. What is the standard deviation of the lifetime of a lightbulb?

Reference no: EM13981900

Repeated weighings of specimen for confidence interval

A laboratory scale is known to have a standard deviation of = 0.001 gram in repeated weighings. Scale readings in repeated weighings are normally distributed, with mean equa

Year-end to arrive at the warranty expense accrual for cars

In the past, Bly has tended to estimate warranty expenses on the high end to be conservative. He must work with the dealership's accountant at year-end to arrive at the warr

How to reject auto maker-s claim mean gas mileage

can you reject the auto maker's claim that the mean gas mileage of its sports utility vehicle is 20 miles per gallon? Assume the population is normally distributed.

Test the claim that the sample comes from a population

Standard deviation of 19.5. Use a 0.05 significance level to test the claim that the sample comes from a population with a standard deviation less than 23.4.

Identify the most typical choice of major at your college

She knew that both very low and very high intensities are not pleasant and that the middle range of intensity produces the highest pleasantness ratings. Would you recommend

Problem regarding the vietnamese perspective

The Americans fought in Viet Nam beginning with a handful of advisers sent in 1950 by President Harry Truman. But the Vietnamese have been fighting occupation for millennium

Question about evaluating functions

Evaluate each of the functions below at x = 1, 2, 4, 8, and 16. Plot the graph of each function. Classify each as linear, quadratic, polynomial, exponential, or logarithmic,

Estimate the simple linear regression relationship

Recently, research efforts have focused on the problem of predicting a manufacturer's market share by using information on the quality of its product.- Estimate the simple l

Reviews

Write a Review

 
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