Find the exact value of tan ^-1 (-root of 3) Write your answer in radians in terms of n.
1 answer:
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Answer: =86
Step-by-step explanation:
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<em>∞ 234483279c20∞</em>
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) .