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Earn +20 ptsQ: True or false a sample is a subset of a population?
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True or false the sample mean is a point of estimate of the population mean?
Nearly true. It is a point estimate, not point ofestimate.
True or false a distribution of sample means is normally distributed with a mean equal to the population mean and standard deviation equal to the standard error of the mean?
True.
The histogram of a sample should have a distribution shape that is skewed. Is this true or false?
False. It can be skewed to the left or right or be symmetrical.
You expect that out of a random sample of 100 Tarzan the Apex Man moviegoers around 87 of them will think it is the best movie ever is this True or False?
True
True or False For a given level of significance if the sample size is increased the probability of comitting a Type II error will increase?
The statement is false. For a fixed alpha, an increase in the sample size will cause a decrease in beta (but an increase in the power).
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