2 A random sample of 250 people living in Barapet was chosen. It was found that 78 of these people owned a BETEC phone.
- Calculate an approximate \(98 \%\) confidence interval for the proportion of people living in Barapet who own a BETEC phone.
- Manjit claims that more than \(40 \%\) of the people living in Barapet own a BETEC phone.
Use your answer to part (a) to comment on this claim.