Exam 7: Sampling and Sampling Distributions

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A population has a standard deviation of 16.If a sample of size 64 is selected from this population, what is the probability that the sample mean will be within ±2 of the population mean?

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Parameters are

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The standard error of the proportion will become larger as​

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Whenever the population has a normal probability distribution, the sampling distribution of xˉ\bar { x } is a normal probability distribution for

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A population has a mean of 53 and a standard deviation of 21.A sample of 49 observations will be taken.The probability that the sample mean will be greater than 57.95 is

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The standard deviation of pˉ\bar { p } is referred to as the?

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The probability distribution of all possible values of the sample proportion pˉ\bar { p } is the

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The following information was collected from a simple random sample of a population. 16 19 18 17 20 18 The point estimate of the population standard deviation is

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Random samples of size 100 are taken from an infinite population whose population proportion is 0.2.The mean and standard deviation of the sample proportion are

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In computing the standard error of the mean, the finite population correction factor is used when

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The sampling distribution of the sample means

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When the population has a normal distribution, the sampling distribution of xˉ \bar x is normally distributed?

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The population being studied is usually considered ______ if it involves an ongoing process that makes listing or counting every element in the population impossible.​

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Cluster sampling is

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The sample mean is the point estimator of

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A simple random sample of 144 observations was taken from a large population.The sample mean and the standard deviation were determined to be 1234 and 120 respectively.The standard error of the mean is

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How many simple random samples of size 5 can be selected from a population of size 8?

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A sample of 25 observations is taken from an infinite population.The sampling distribution of pˉ\bar { p } is

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From a population of 200 elements, a sample of 49 elements is selected.It is determined that the sample mean is 56 and the sample standard deviation is 14.The standard error of the mean is

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It is impossible to construct a frame for a(n)​

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