A band selects 40
ticket-holders at random from each concert to win t-shirts. The band knows that
55% of the ticket-holders buy their tickets at least a month before the concert. Suppose the band calculated the proportion p
of winners from each concert who bought their tickets at least a month before the concert.
Which of the following distributions is the best approximation of the sampling distribution of p
?
Each distribution uses the same scale. Choose 1 answer:
(Choice A) A left skewed distribution curve has a mean of 0.55.
A
A left skewed distribution curve has a mean of 0.55.
(Choice B) A right skewed distribution curve has a mean of 0.55.
B
A right skewed distribution curve has a mean of 0.55.
(Choice C) A normal distribution curve has a mean of 0.55.
C
A normal distribution curve has a mean of 0.55.
(Choice D) A horizontal, uniform distribution has a mean of 0.55.
D
A horizontal, uniform distribution has a mean of 0.55.
