What is the name for the test that assesses whether the difference between the mean score for a sample and that of the population as a whole is 'statistically significant'?

 i)Personal relationships between the marketer and the respondent are less important.

ii)The marketer needs to target the correct correspondent more carefully.

Which of the following statements relating to business-to-business research is/are true?

 i)Personal relationships between the marketer and the respondent are less important.

ii)The marketer needs to target the correct correspondent more carefully.

 i)Emotive language in a survey question

ii)Delay between designing a survey and using it

iii)Using a voluntary-response method that leads to respondents not being representative of the population

iv)Using qualitative rather than quantitative methods

Which TWO of the following situations may cause 'response bias'?

 i)Emotive language in a survey question

ii)Delay between designing a survey and using it

iii)Using a voluntary-response method that leads to respondents not being representative of the population

iv)Using qualitative rather than quantitative methods