Private tuition A 2018 Sutton Trust survey found that 27% of young people in England and Wales attended private tuition.

This poll was based on a random sample of 2381 young people aged between 11 and 16.

(Source: https://www.suttontrust.com/newsarchive/27-ofpupils-

pay-to-have-private-tuition/)

a) Find a 90% confidence interval for the proportion of young people in England and Wales who attended private tuition.

b) Interpret your interval in this context.

c) Explain what “90% confidence” means.

d) Do these data refute a pundit’s claim that 1/5 of the English and Welsh attended private tuition.