Which of the following is necessary to ensure an unbiased estimate of ?

	a.	An independent and identically distributed sample (iid)
	b.	None of these
	c.	A normally distributed sample
	d.	A normally distributed population
	e.	A consistent estimate

Open RStudio and set the seed to 1234 using the command set.seed(1234). Then, make vector of 1000 uniformly generated random numbers between 0 and 10 using the command z <- runif(1000, 0 ,10). What is the mean value of those 1000 uniformly generated random numbers? Use command mean(z).

	a.	5.12
	b.	4.86
	c.	5.07
	d.	None of these.
	e.	4.96