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:
divide the cost of the dog food by three and thats ur answer
Step-by-step explanation:
Answer:
x = 1/15
Step-by-step explanation:
Answer:
2,535,008
two million , five hundred thirty five thousand, eight