Answer: (17.42, 20.78)
Step-by-step explanation:
As per given , we have
Sample size : n= 9
years
Population standard deviation is not given , so it follows t-distribution.
Sample standard deviation : s= 1.5 years
Confidence level : 99% or 0.99
Significance level :
Degree of freedom : df= 8 (∵df =n-1)
Critical value :
The 99% confidence interval for the population mean would be :-
Hence, the 99% confidence interval for the population mean is (17.42, 20.78) .
Answer:
Aqua Town 6 + 1x = y
Wet World 3+ 2x = y
Step-by-step explanation:
Answer:
the answer is A.
Step-by-step explanation:
Answer:
Step-by-step explanation:no clue
Let's find the amount of time in between.
3 hours are in between.
The amount of minutes in 3 hours are 180 minutes.
The car travels 162 miles in 180 minutes.
162 miles:180 minutes
x miles : 60 minutes
Let's divide 162 by 3
54 miles : 60 minutes.
It travels an average of 54 miles per hour.