Customers at a gas station pay with a credit card (a), debit card (b), or cash (c). assume that successive customers make independent choices with p(a) = 0.6, p(b) = 0.2, and p(c) = 0.2. (a) among the next 100 customers, what are the mean and variance of the number who pay with a debit card? mean customers variance customers2 explain your reasoning. because we are interested in whether or not a debit card was used, we can use the binomial distribution. x = the number of customers who use a debit card. because we are interested in whether or not a debit card was used, we can use the binomial distribution. x = the probability that a customer used a debit card. because we are interested in whether or not a debit card was used, we can use the binomial distribution. x = the number of customers at the gas station. (b) answer part (a) for the number among the 100 who don't pay with cash. mean customers variance customers2

Step-by-step explanation:

Given that customers at a gas station pay with a credit card (A), debit card (B), or cash (C).

To find out the mean and variance of the number who pay with a debit card for 100 customers

We can sort persons using a debit card or not.  Thus there are two outcomes with p = success for each trial =0.6

Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the number of customers who use a debit card out of 100 customers

Mean = np = 60 and variance =npq = 24

Similarly for no of customers do not pay with cash is binomial with p = 0.8

Mean = 80 and variance =16

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

the  office resources  are the human, physical and financial  resources  which are utilized for performing all the activities in order to achieve the organizational objectives.

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