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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
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Phoniex University
Oct-2001 - Nov-2016
Examine Figure 7-8, “Fall Back.”
(a) Of the 1024 adults surveyed, 66% were reported to favor daylight saving time. How many people in the sample preferred daylight saving time? Using the statistic and sample size n = 1024, find a 95% confidenceinterval for the proportion of people p who favor daylight saving time. How could you report this information in terms of a margin of error?
(b) Look at Figure 7-8 to find the sample statistic for the proportion of people preferring standard time. Find a 95% confidence interval for the population proportion p of people who favor standard time. Report the same information in terms of a margin of error.
FIGURE 7-8
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