Exam 7: Sampling and Sampling Distributions
Exam 1: Data and Statistics84 Questions
Exam 2: Descriptive Statistics: Tabular and Graphical Displays67 Questions
Exam 3: Descriptive Statistics: Numerical Measures127 Questions
Exam 4: Introduction to Probability99 Questions
Exam 5: Discrete Probability Distributions86 Questions
Exam 6: Continuous Probability Distributions120 Questions
Exam 7: Sampling and Sampling Distributions117 Questions
Exam 8: Interval Estimation144 Questions
Exam 9: Hypothesis Tests129 Questions
Exam 10: Inference About Means and Proportions With Two Populations85 Questions
Exam 11: Inferences About Population Variances85 Questions
Exam 12: Comparing Multiple Proportions, Tests of Independence and Goodness of Fit59 Questions
Exam 13: Experimental Design and Analysis of Variance80 Questions
Exam 14: Simple Linear Regression131 Questions
Exam 15: Multiple Regression103 Questions
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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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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
is

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The value of the _____ is used to estimate the value of the population parameter
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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 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
, 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 point estimate of the population standard deviation is

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

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