SOLUTION: in a poll of women 18 and older, 70% of women polled felt their financial situation was better than their mothers. assume that this percentage is true fo the current populatiom of
Algebra.Com
Question 242557: in a poll of women 18 and older, 70% of women polled felt their financial situation was better than their mothers. assume that this percentage is true fo the current populatiom of all women 18 and older. find the probability that the proportion of women in a random sample of 400 who hold this view is less than .73
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
in a poll of women 18 and older, 70% of women polled felt their financial situation was better than their mothers.
-------------
assume that this percentage is true for the current populatiom of all women 18 and older.
-------------
find the probability that the proportion of women in a random sample of 400 who hold this view is less than .73
-------------------------------
z(0.73)=(0.73-0.70)/sqrt(0.7*0.3/400) = 1.30931
------------------------
P(p-hat < 1.30931) = P(z < 1.30931) = 0.9048
=================================================
Cheers,
Stan H.
RELATED QUESTIONS
A newspaper poll of 400 people stated that 58% were in favor of a recycling program. It... (answered by hamsanash1981@gmail.com)
In a recent poll 3,000 people were asked their opinion about health care reform. If 37.5% (answered by edjones)
in a poll, 482 out of 1660 people said that their commute to work is more than 10... (answered by stanbon)
In one survey, successful female entrepreneurs were asked to state their personal... (answered by ElectricPavlov)
In a survey 1000 registered voters were asked about their political preferences. The... (answered by josmiceli)
A club has 18 members, 10 men and 8 women. In how many different ways can they select a... (answered by robertb)
1. Based on data from the National Health Service, women between the ages of 18 and 24... (answered by stanbon)
1. Based on data from the National Health Service, women between the ages of 18 and 24... (answered by Boreal)
A sociologist wishes to see if it is true that for a certain group of professional... (answered by Theo)