Calculus and Above

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9 A population of values has a distribution with μ = 116.2 μ
THIS IS QUESTION #9 A population of values has a distribution with μ = 116.2 μ = 116.2 and σ = 13.4 σ = 13.4 . You intend to draw a random sample of size n = 168 n = 168 .According to the Central Limi… read more
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A population of values has a distribution with μ = 173.8 and
A population of values has a distribution with μ = 173.8 and σ = 44.3 . You intend to draw a random sample of size n = 39 .According to the Central Limit Theorem:(a) What is the mean of the distributi… read more
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A population of values has a normal distribution with μ =
A population of values has a normal distribution with μ = 188.6 and σ = 78.4 . You intend to draw a random sample of size n = 147 .What is the mean of the distribution of sample means? μ ¯ x =What is … read more
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Chapter 6 00. The average rent in a city is $1,570 per month
Chapter 6 00. The average rent in a city is $1,570 per month with a standard deviation of $200. Assume rent follows the normal distribution. Use the empirical rule to answer the following questions. a… read more
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1. (Chapter 7: Estimating a Population Proportion) A poll
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random sample size of 25 from population has mean of 10 and
random sample size of 25 from population has mean of 10 and standard deviation 5. the standard deviation of the sampling distribution of the mean is? for testing the mean, the margin of error of a 90%… read more
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9. What is the minimum sample size you should use to assure
9. What is the minimum sample size you should use to assure that your estimate of pq5_7 will be within the required margin of error around the population p? Margin of error: 0.005; confidence level: 9… read more
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1. What is the primary reason for applying a finite population
1. What is the primary reason for applying a finite population correction coefficient? A. If you don't apply the correction coefficient, your confidence intervals will be too narrow, and thus overconf… read more
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1. The lengths of human pregnancies are normally distributed
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1. Assume you need to build a confidence interval for a population
1. Assume you need to build a confidence interval for a population mean within some given situation. Naturally, you must determine whether you should use either the t-distribution or the z-distributio… read more
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1. Consider a population with mean μ = 77.6 and(Standard Deviation)
1. Consider a population with mean μ = 77.6 and(Standard Deviation) σ = 5.63. (A) Calculate the z-score for x̅ = 76.1 from a sample of size 52. (B) Could this z-score be used in calculating probabilit… read more
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2)Which of the following hypothesis tests use a z test statistic? A)
2)Which of the following hypothesis tests use a z test statistic? A) Matched Pairs B) Single Proportion C) Two Proportions D) Goodness-of-Fit E) Single Mean: σ Known F) Independence G) Two Variances H… read more
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I. a. What percentage of the area of the standard normal distribution
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Use the one-mean z_interval procedurce with the sample mean,
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Find the mean for the given sample data. Unless indicated otherwise,
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Use the one-mean z-interval procedure with the sample mean,sample
Use the one-mean z-interval procedure with the sample mean,sample size,population standard deviation, and confidence level given below to find aconfidence interval for the mean of the population,μ fro… read more
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1. For a particular sample of 63 scores on a psychology exam,
1. For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 87 Standard deviation = 9 Range = 51 Mean = 72 Median = 72 Mode … read more
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1. For a particular sample of 68 scores on a psychology exam,
1. For a particular sample of 68 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 89 Standard deviation = 7 Range = 60 Mean = 70 Median = 73 Mode … read more
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