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Stats Week 5 Quiz

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QUESTION 1 1. For the interval estimation of μ when σ is known and the sample is large, the proper distribution to use is | | the normal distribution | | | the t distribution with n degrees of freedom | | | the t distribution with n + 1 degrees of freedom | | | the t distribution with n + 2 degrees of freedom |
5 points
QUESTION 2 1. An estimate of a population parameter that provides an interval of values believed to contain the value of the parameter is known as the | | confidence level | | | interval estimate | | | parameter value | | | population estimate |
5 points
QUESTION 3 1. The value added and subtracted from a point estimate in order to develop an interval estimate of the population parameter is known as the | | confidence level | | | margin of error | | | parameter estimate | | | interval estimate |
5 points
QUESTION 4 1. Whenever the population standard deviation is unknown and the population has a normal or near-normal distribution, which distribution is used in developing an interval estimation? | | standard distribution | | | z distribution | | | alpha distribution | | | t distribution |
5 points
QUESTION 5 1. The z value for a 97.8% confidence interval estimation is | | 2.02 | | | 1.96 | | | 2.00 | | | 2.29 |
5 points
QUESTION 6 1. The t value for a 95% confidence interval estimation with 24 degrees of freedom is | | 1.711 | | | 2.064 | | | 2.492 | | | 2.069 |
5 points
QUESTION 7 1. As the sample size increases, the margin of error | | increases | | | decreases | | | stays the same | | | increases or decreases depending on the size of the mean |
5 points
QUESTION 8 1. The ability of an interval estimate to contain the value of the population parameter is described by the

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