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Quantitative Methods II
The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a standard deviation of $500. a. What is the random variable? b. The mayor of Daisy City makes $2250 a month. What percentage of Daisy
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The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the
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what are the mean and standard deviation of a sampling distribution consisting of samples of size 16? these sameples were drawn from a population whose mean is 25 and who standard deviation is 5. a. 25 and 1.25 b. 5 and 5 c. 25
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Erica found the mean of the yearly incomes of a sample of households in her hometown as shown in the chart below. In a report, she stated, she stated, "the typical income in my neighborhood is about $81,500 per year." How is this
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An SRS of size n is taken from a large population whose distribution of income is extremely rightskewed and the mean income is calculated. Which of the following statements is false? a) When n > 30, the sampling distribution of
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A packaging device is set to fill detergent power packets with a mean weight of 5 Kg. The standard deviation is known to be 0.01 Kg. These are known to drift upwards over a period of time due to machine fault, which is not
asked by anoop on May 29, 2011 
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the mean annual income for adult women in one city is and the standard deviation of the incomes is The distribution of incomes is skewed to the right. For samples of size 30, which of the following statements best describes the
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The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a standard deviation of $500. a. What is the random variable? b. The mayor of Daisy City makes $2250 a month. What percentage of Daisy
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Monthly incomes of employees at a particular company have a mean of $5954. The distribution of sample means for samples of size 70 is normal with a mean of $5954 and a standard deviation of $259. Suppose you take a sample of size
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I just need help with starting how to calculate the problem I am so lost. A random sample of eight observations from the first population resulted in a standard deviation of 10. A random sample of six observations from the second
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A horticulturist wishes to estimate the mean growth of seedlings in a large timber plot last year. A random sample of n = 100 seedlings is selected and the oneyear growth for each is measured. The sample yields = 5.62 cm. The
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