Answer:
Step-by-step explanation:
The confidence interval for population mean is given by :-
, where n=sample size
= sample mean
=sample standard deviation
= critical t-value (for two tailed )
Let be the confidence interval for the population mean mercury concentration.
As per given , we have
Sample size : n= 28
degree of freedom = 27 [df=n-1]
Sample mean : cc/cubic meter
Sample standard deviation : s= 0.0036
Significance level :
Critical two-tailed test value :
(Using t-distribution table.)
We assume the population is approximately normal.
Now, the 98% confidence interval for the population mean mercury concentration will be :-
Required confidence interval :
Jordan eats 4 1/2 bags of dog food in 6 months or 9/2 bags . Explanation: 3/4 x 6 = 4 1/2
Answer:
7y = 20
Step-by-step explanation:
Answer:
875 cm^3
Step-by-step explanation:
Here, we want to calculate the volume of the pyramid.
To do this, we need to calculate the area of the base and then multiply this by the height of the pyramid in question
Mathematically since the base is a square, formula for the base area would be ;
L^2 = 5^2 = 125 cm ^2
Now
using the height to get the volume , we have 125 * 7 = 875 cm^3
The number is 243. If you divide by any of the numbers mentioned above it will have a reminder of 3.