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A wildlife study is designed to find the mean weight of salmon caught by an Alaskan fishing company. Find the minimum sample size needed in order to construct a 95% confidence interval for the mean weight of such salmon, to within 0.20 pounds. Assume that σ = 2.10.
a contractor purchases a bulldozer for 36500. the bulldozer requires an average expenditure of 5.25 per hour for fuel
This exercise concerns pattern appearance. In successive independent flips of a fair coin, what is the expected number of trials until the pattern THTHITHTET ap
A nationally standardized test is scaled so that the normally distributed scores have a mean of 80 and a standard deviation of 10 in the population. If we have a group of 25 scores from this test, and compute the mean, what is the probability that th..
In a shipment of 20,000 items, 400 are defective. These are scattered randomly throughout the entire lot. Assume the probability of a defective is the same.
In 2007, Starbucks inaugurated its Dulce de Leche Latte.14 If 8% of all customers who walk in order the new drink, what is the probability that out of 13 people, at least 1 will order a Dulce de Leche Latte?
many studies have found that people who drink alcohol in moderation have lower risk of heart attacks than either
the pitney pipe company is one of several domestic manufactures of pvc pipe. the quality control department sampled 600
A directed line segment in the plane can be represented as a pair of vectors -- the vector running from the origin to the start-point of the segment, and the vector running from the origin to the end-point of the segment. Use your vector represent..
Critically illustrate out the properties of a normal distribution. Explain why there are an infinite number of normal distributions.
1. the length of time in minutes required to complete a series of physical therapy exercises is normally distributed
She believes that the number of customers served on weekdays follows a normal distribution. Construct an 99% confidence interval of the average number of customers served on weekdays.
1. the total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of 206 milligrams
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