same in 1950 and 2000, or was it higher in one of these years
than the other? To investigate this question, a simple random
sample of 500 Californians was selected from the 1950 Census, and
an independent random sample of 500 Californians was selected from
the 2000 Census. 1. Does this study involve random sampling, random
assignment, both or neither? Explain 2. State the appropriate null
and alternative hypothesis, in symbols and in words. It turned out
that 219 of...