Indosat's cellular phones hold a promotion with a fee of Rp. 5,000, free calls to all operators and Indosat with the IM3 card, free 500 minutes of calls and online, in April 2019 each R&D team conducted a survey in Jakarta by distributing 1000 questionnaires. The survey results show that 300 loyal Indosat respondents and 350 loyal IM3 Card respondents gave a positive response to each cell phone using a 95% confidence interval, you are asked to analyze by estimating the proportion of cellphone users who gave a positive response to Axis by paying Rp. 5,000 for free. sms all operators and Simpati with AS card in Bogor.

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