Answer:
8.48
Step-by-step explanation:
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:
180 meters
Step-by-step explanation:
100yd field is 90 meters so a 200yd field is 180 meters
51/4 is the correct answer
Answer:
x
−
a
)
2
+
(
y
−
b
)
2
=
r
2
Step-by-step explanation: