Facing the threat of unemployment rates reaching a new high, the Australian government decided to identify the proportion of Australians adults aged between 18 and 25 who worked currently worked...

Extracted text: Facing the threat of unemployment rates reaching a new high, the Australian government decided to identify the proportion of Australians adults aged between 18 and 25 who worked currently worked full-time as a proxy for future employment. After conducting a telephone survey of 612 Australians adults under 25, an interval estimate of 0.834 to 0.873 was calculated. Determine the level of confidence (answer as percentage correct to two decimal places).