Exam 7: Sampling and Sampling Distributions

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A simple random sample of 100 observations was taken from a large population.The sample mean and the standard deviation were determined to be 50 and 5, respectively.The standard error of the mean is

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A random sample of 525 people was taken from a very large population.225 of the people in the sample were female.The standard error of the proportion is

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The sample statistic s is the point estimator of

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A population has a mean of 125 and a standard deviation of 16.A sample of 64 observations will be taken.The probability that the sample mean will be between 122.4 and 126.1 is

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A probability distribution of all possible values of a sample statistic is known as

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A sA sample of 51 observations will be taken from an infinite population.The population proportion equals 0.85.The probability that the sample proportion will be between 0.8327 and 0.8631 is

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A random sample of 144 bottles of cologne showed an average content of 4 ounces.It is known that the standard deviation of the contents (i.e., of the population) is 0.3 ounces.The point estimate of the mean content of the bottles is

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How many simple random samples of size 4 can be selected from a population of size 8?

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The purpose of statistical inference is to provide information about the

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It is impossible to construct a frame for a(n) _____ population.

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The basis for using a normal probability distribution to approximate the sampling distribution of The basis for using a normal probability distribution to approximate the sampling distribution of   is​ is​

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The value of the _____ is used to estimate the value of the population parameter

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The population we want to make inferences about is th​e

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A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obtained. A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obtained.   A point estimate of the mean is A point estimate of the mean is

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From a population of 500 elements, a sample of 225 elements is selected.It is known that the variance of the population is 900.The standard error of the mean is approximately

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In a local university, 70% of the students live in the dormitories.A random sample of 75 students is selected for a particular study.The standard deviation of In a local university, 70% of the students live in the dormitories.A random sample of 75 students is selected for a particular study.The standard deviation of   , known as the standard error of the proportion is approximately , known as the standard error of the proportion is approximately

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The extent of the sampling error might be affected by all of the following factors except the

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The following information was collected from a simple random sample of a population. The following information was collected from a simple random sample of a population.   The point estimate of the population standard deviation is The point estimate of the population standard deviation is

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The probability distribution of all possible values of the sample proportion The probability distribution of all possible values of the sample proportion   is the is the

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Parameters are

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