Question

] Suppose a 90% CI for the mean per day gasoline cost (in dollars) for commuters in a certain city is 4.214, 4.738 . Which (if any) of the following are correct interpretations of this CI? Answer "correct" or "not correct" for each.

a) We can be 90% confident that commuters in this city spend between $4.214 and $4.738 per day for gasoline. __________________________

b) We can be 90% confident that the actual mean per day gasoline cost for commuters in this city is somewhere between $4.214 and $4.738. __________________________

c) About 90% of commuters in this city spend between $4.214 and $4.738 per day for gasoline. __________________________

d) We can be 90% confident that most sample means for per day gasoline cost for commuters in this city will be between $4.214 and $4.738 _________________________.

Answer 1

#90% CI for the mean per day gasoline cost (in dollars) for commuters in a certain city is 4.214, 4.738

# correct interpitation are

a) We can be 90% confident that commuters in this city spend between $4.214 and $4.738 per day for gasoline. _

Ans correct interpretation

b) We can be 90% confident that the actual mean per day gasoline cost for commuters in this city is somewhere between $4.214 and $4.738.

Ans not correct interpretation

c) About 90% of commuters in this city spend between $4.214 and $4.738 per day for gasoline.

Ans correct interpretation

d) We can be 90% confident that most sample means for per day gasoline cost for commuters in this city will be between $4.214 and $4.738

Ans .not correct interpretation