00:01
The topic of global warming increasingly appears in the news.
00:03
It has the potential to impact companies ' operations through changes in governmental regulations, new reporting requirements, necessary operational changes, and so on.
00:13
A survey of senior finance professionals was taken to gauge members ' thoughts on global warming and its impact on their companies.
00:19
The survey found that 68 % of senior finance professionals believe that global warming is having a significant impact on the environment.
00:29
Suppose that you select a sample of 100 senior finance professionals.
00:34
What's the probability that the sampling percentage indicating global warming is having a significant impact on the environment will be between 62 % and 73%.
00:45
So the probability that x is between 62 and 73 can be calculated by taking the probability of 0 .62 minus 0 .68 divided by the square root of 0 .68 times.
01:01
0 .32 over 100.
01:04
That's less than z, which is less than 0 .73 minus 0 .68 divided by that same denominator of 0 .68 times 0 .32 over 100.
01:18
That puts z in between the z values of negative 1 .29 and 2 .36...