| Exam Board | AQA |
|---|---|
| Module | S3 (Statistics 3) |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Central limit theorem |
1 A council claims that 80 per cent of households are generally satisfied with the services it provides.
A random sample of 250 households shows that 209 are generally satisfied with the council's provision of services.\\
(a) Construct an approximate $95 \%$ confidence interval for the proportion of households that are generally satisfied with the council's provision of services.\\
(b) Hence comment on the council's claim.
\hfill \mbox{\textit{AQA S3 Q1}}