Question
A news station needs to survey the residents of a city having an election to see what proportion is in support of Prop 9. The
A news station needs to survey the residents of a city having an election to see what proportion is in support of Prop 9. The news station wants to create a 95% confidence interval for the report that has a margin of error of 1.5 percentage points. Earlier polls stated that the citywide population proportion who support Prop 9 is 68%. What is the minimum sample size of people surveyed that the news station would need to survey to create a proper confidence interval?
b) The news station needs to survey the residents of a city having an election to see what proportion is in support of Prop 10. The news station wants to create a 95% confidence interval for the report that has a margin of error of 1.5 percentage points. There are no prior polls on what the population of the city is in support of Prop 10. What is the minimum sample size of people surveyed that the news station would need to survey to create a proper confidence interval?
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Elementary Algebra
Authors: Charles P McKeague
3rd Edition
1483263843, 9781483263847
