The owner of the West End Kwick Fill Gas Station wishes to determine the proportion of customers who pay at the pump using a credit card or debit card. He surveys 100 customers and finds that 80 paid at the pump. (Round your answers to 2 decimal places.) a. Estimate the value of the population proportion. Estimated population proportion 0.00 b. Develop a 95% confidence interval for the population proportion. Confidence interval for the population proportion is between and

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