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.) estimate the value of the population proportion.

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

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.