Answer: a) 453 b) 1537
Step-by-step explanation:
As per given , we have
Margin of error : E= 0.025
Critical value for 95% confidence interval : 
a) The prior estimate of population proportion : p=0.08
Required sample size :-
The minimum sample size is 453 U.S. adults.
b) Since the prior estimate of population proportion is not available , so we take p= 0.5
Required sample size :-
The minimum sample size is 1537 U.S. adults.
Answer:
a
Step-by-step explanation:
multiply both members in the pharanthesis by 6: 6*3+6*g= 18+6g
How many cards are there in your deck? What color are these cards? These are things needed to know to be able to accurately answer this question
Answer:
The gear ratio is 2.5 :1.
Step-by-step explanation:
A gear ratio is the ratio of the teeth on the front sprocket and the teeth on the rear sprocket.
Given is that the bike has 45 front teeth and 18 rear sprocket teeth.
So, gear ratio will be 
Hence, the ratio is 2.5 :1.
