what is the sum of the measures of angle E, angle D, and angle ECD. A. 76° B. 104° C. 128° D. 180°
1 answer:
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Answer: 0.80
Step-by-step 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=
Since , the best point estimate for population proportion is sample proportion.
Therefore, the estimated value for population proportion =0.80