Question Details

A simple random sample from an infinite population 



1.	A population consists of 500 elements.  We want to draw a simple random sample of 50 elements from this population.  On the first selection, the probability of an element being selected is

	a.	0.100
	b.	0.010
	c.	0.001
	d.	0.002
	e.	None of the above answers is correct.
	
2.	The closer the sample mean is to the population mean,

	a.	the larger the sampling error
	b.	the smaller the sampling error
	c.	Both a and b are correct, depending on the size of the population.
	d.	All of the above answers are correct.
	e.	None of the above answers is correct.
		
3.	Since the sample size is always smaller than the size of the population, the sample mean must

	a.	always be smaller than the population mean
	b.	be larger than the population mean
	c.	be equal to the population mean
	d.	be zero
	e.	None of the above answers is correct.
	
4.	As the sample size increases, the

	a.	standard deviation of the population decreases
	b.	population mean increases
	c.	standard error of the mean decreases
	d.	standard error of the mean increases
	e.	None of the above answers is correct.
	
5.	A simple random sample from an infinite population is a sample selected such that

	a.	each element selected comes from the same population
	b.	each element is selected independently
	c.	both a and b must be satisfied
	d.	the probability of being selected changes
	e.	None of the above answers is correct.





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