Answer: 0.80
Explanation:
Given : 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.
Then, sample proportion=
![(80)/(100)=0.80](https://img.qammunity.org/2020/formulas/mathematics/high-school/x5o3tlik85ruxpvbept0kza0omvo1mvs1b.png)
Since , the best point estimate for population proportion is sample proportion.
Therefore, the estimated value for population proportion =0.80