Various state and national automobile associations regularly ...

[Sportsfan2111]

Various state and national automobile associations regularly survey gasoline stations to determine the current retail price of gasoline. Suppose one such national association contacts 200 stations in the United States to determine the price of regular unleaded gasoline at each station. In the context of this problem, define the following descriptive measures: , , , s.
 
  What will be an ideal response?

Question 2

In a box of 50 markers, 30 markers are either red or black and 20 are missing their caps. If 12 markers are either red or black and are missing their caps, find the probability that a randomly selected marker is red or black or is missing its cap.
 
  A) .24 B) .76 C) .38 D) 1

[trampas]

Answer to Question 1

 is the mean price of the regular unleaded gasoline prices of all retail gas stations in the United States.

 is the standard deviation of the regular unleaded gasoline prices of all retail gas stations in the United States.

is the mean price of the regular unleaded gasoline prices collected from the 200 stations sampled.

s is the standard deviation of the regular unleaded gasoline prices collected from the 200 stations sampled.

Answer to Question 2

B

[Sportsfan2111]

Excellent

[peter]

Gracias!