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problem1) What is the history of North west corner method in transportation problem?
problem2) Why there are only m+n-1 solution to the transportation problem?
Statistics and Probability, Statistics
1. What does the error of estimation tell us about the results of a study conducted using probability sampling? 2. What happens to the error of estimation as one's sample size increases?
Assume the sweatshirt test scores are normally distributed with a mean of 500 and a standard deviation of 100. (a) Consider all random samples of 100 test scores. What is the standard deviation of the sample means? (b) W ...
Suppose a firm that produces light bulbs wants to know whether it can say that its light bulbs typically last more than 1500 hours. Hoping to find support for their claim, the firm collects a random sample of n = 25 ligh ...
What is the difference between simple linear and multiple regressions? Give an example of a situation where linear regression might be useful? Give an example of a situation where multiple regression might be useful?
A research concludes that the number of hours of exercise per week for adults is normally distributed with a mean of 3.5 hours and a standard deviation of 3 hours. Show all work. Just the answer, without supporting work, ...
Given the following waiting time distribution in a hotel, compute the expected value of the waiting time in 2 dec pl. Waiting time (minutes) Probability 4.0 20% 4.5 28% 5.0 32% 5.5 10% 6.0 10%
The Condorcet Method The French mathematician Condorcet proposed the following method for determining a social preference order based on the strict preferences of the individuals in society. A voter i with a strict prefe ...
A prospective purchaser wishes to estimate the mean dollar amount of sales per customer at a toy store located in an airport terminal. Based on data from other similar airports, the standard deviation of such sales is ab ...
Jenks Co. partially refunded $180,000 of its outstanding 10% note payable, made 1 year ago to Arma State Bank by paying $180,000 plus $18,000 interest (having obtained the $198,000 by using $52,400 cash and signing a new ...
The average batter life of the iPhone 4S is reported to be 6.0 hours by Apple. Assume that the population standard deviation for the better life for this cell phone is 30 minutes. A random sample of 50 iPhones had an ave ...
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