A survey on British Social Attitudes asked respondents if they
had ever boycotted goods for ethical reasons (Statesman, January
28, 2008). The survey found that 23% of the respondents have
boycotted goods for ethical reasons.
a)In a sample of six British citizens, what is the probability
that two have ever boycotted goods for ethical reasons?
b)In a sample of six British citizens, what is the probability
that at least two respondents have boycotted goods for ethical
reasons?
c)In a sample of ten British citizens, what is the probability
that between 3 and 6 have boycotted goods for ethical
reasons?
In a sample of ten British citizens, what is the expected
number of people that have boycotted goods for ethical reasons?
Also find the standard deviation.