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| In a random sample, every unit in the population has a(n) _______ chance of being selected |
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| In a random sample, the selection of any one unit ___________ affect the selection of any other unit |
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| In a random sample, ___________ combinations are possible |
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| A representative sample is one in which important characteristics in the population are mirrored in the __________. |
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| The difference between a sample statistic and a population parameter that is due to chance is referred to as ____________. |
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Definition
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| The mean of a population (μ) = 54.72, and the mean of a sample from that population (x̄) = 54.92. Assuming the difference between the two values is due to chance, we can refer to the difference as sampling __________. |
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Definition
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| A sampling distribution of sample means is based on taking repeated samples (of size n) from the same population and plotting the __________ of the different samples. |
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| According to the Central Limit Theorem, the mean of a sampling distribution of sample means will equal the ___________ of the population from which the samples were drawn. |
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Definition
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| The standard deviation of a sampling distribution of sample means is referred to as the __________________. |
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Definition
| standard error of the mean |
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| According to the Central Limit Theorem, and given a sampling distribution of sample means, the standard error of the mean will equal the __________ of the population divided by the __________ sample size. |
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Definition
| standard deviation, square root |
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| The shape of a sampling distribution of sample means will approach the shape of a ___________ curve. |
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| When selecting a sample, the physical representation of the population is known as the ______________. |
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| A confidence interval for the mean is calculated by adding and subtracting a value to and from the sample ___________. |
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Definition
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| The purpose of constructing a confidence interval for the mean is to ___________ the true value of the population mean, based upon the mean of a _________. |
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Definition
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| A confidence interval for the mean is an interval within which you believe the ____________ of the population is located. |
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Definition
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| As the level of confidence increases, the precision of your estimate __________. |
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Definition
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| There is a(n) __________ relationship between level of confidence and precision of the estimate. |
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Definition
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| When constructing a confidence interval for the mean with σ known, how is the standard error of the mean calculated? |
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Definition
| σ (pop. stand.dev.) divided by the square root of n |
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| When constructing a confidence interval for the mean with σ unknown, how is the standard error of the mean estimated? |
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Definition
| s (sam. stand.dev) divided by the square root of n |
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Term
| The level of significance is the probability of making a(n) ___________ error. |
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Definition
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| Rejecting a null hypothesis when it is true represents a(n) __________ error. |
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Definition
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| Failing to reject a null hypothesis when it is false represents a(n) __________ error. |
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Definition
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| The _______________ is represented by the H0 symbol. |
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| The alpha level is also known as the level of ______________. |
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| Another name for the region of rejection is the _______________. |
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| If your calculated test statistic does not meet or exceed the critical value you would _____________ the null hypothesis. |
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Definition
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| The levels of significance most commonly used by statisticians are the ______ and ______ levels. |
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Definition
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| When our calculated test statistic falls within the ____________, we reject the __________. |
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Definition
| critical region, null hypothesis |
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