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The amounts dispensed by a cola machine follow the normal distribution with a mean of 7 ounces and a standard deviation of 0.10 ounces per cup.
A light bulb manufacturer advertises that the average life for their light bulbs is 800 hours. A random sample of 15 of their light bulbs
Calculate the standard deviation. 2.31, 2.79, 3.33, 4.21, 4.22, 4.75, 5.51, 6.26, 11.57, 18.90, 20.25, 25.78, 36.88, 44.96, 77.82, 80.80, 105.80, 151.95
Is it reasonable that â consistently underestimates a? Show that the bias in the estimator approaches zero as n gets large.
A random sample of 55 adults in a certain country showed an average height of six feet (72 inches) for adults. Statistics show the population standard deviation
Could you please help me determine if this article is quantitative, qualitative, or mixed methods? How do you know?
Do you think reducing coffee prices is a good strategy for increasing the mean customer count?
What is the moment generating function of the probability density function f(x) = 4x-x^2 for 0
It is known that the IQ scores of workers in a certain company are normally distributed with a standard deviation of ten.
Two major wireless phone companies are going to offer 4G services in the country of Uruguay. Because of county regulations each company.
According to the census, the average age of men marrying for the first time is 24 years. Assume ages of men are normally distributed with a standard deviation
Foreign service employees receive housing allowances when posted abroad. These allowances average $30000 annually.
A member of Congress in interested in whether constituents favor a proposed gun control bill.
In grading Oranges into "A","B" and "C", a large orchard uses weights to distinguish Oranges. Any Orange weighing more than 2 ounces is classified as grade
Consider an acceptance-sampling scheme in which a factory takes delivery of a batch of components if a random sample of 400 components
A noted scientist Dr. Iconu wanted to investigate attitudes toward television advertising among American college students.
Suppose the average weight of an item labeled 16 ounces actually has mean 17 ounces and variance 4 (ounce^2). What is the approximate probability
In a case-control study of the relationship of radiation exposure and thyroid cancer, 50 cases admitted for thyroid cancer and 100 "controls".
A very large number of fish are swimming in a lake. Their weights are normally distributed with mean 1.30kg and a standard deviation 0.40kg
In the case of Castenedav. Partida, it was found that during a period of 11 years in Hilda County, Texas, 870 people were selected for grand jury duty.
A university professor keeps records of his travel time while he is driving between his home and the university.
Tim has two more problems to solve on his test, but he doesn't know how long it will take to finish them. He assigns mutually irrelevant normal distributions
In a production run of 40 of a particular model of radiation detector, there are four which have defective circuits.
Write up the LP model for the problem. Include the objective function and all constraints, including any non-negativity constraints.
The metropolitan school system consists of two districts, east and west. The east district contains 35% of all students.