Answer:
We are confident at 90% that the true mean for the amount spent on medicines is between (4568.96 and 4631.04)
Step-by-step explanation:
Information given
represent the sample mean for the amount spent on medicines
population mean
s=800 represent the sample standard deviation
n=1800 represent the sample size
Solution
The confidence interval for the true population mean is given by:
(1)
We can calculate the degrees of freedom with:
We know that the Confidence level is 0.90 or 90%, the value of significance is 
and 
, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,1799)".And we see that 
Replcing in the formula for the confidence interval we got:
We are confident at 90% that the true mean for the amount spent on medicines is between (4568.96 and 4631.04)
Answer:
(2,-1)
4 over 3 on a gragh divided by the demonitar of the higher number equaled to 5 will get u (2,-1)
Step-by-step explanation:
Hopefully this helped, have a great day! :)
The perimeter is defined as the sum of all the sides of any polygon.
A rectangle is a polygon with 4 sides and 2 pairs of parallel sides. Therefore, in order to find the perimeter of any rectangle, we can either add up all the sides given to you or use a formula which states that:
P = 2L + 2W
Where,
L is the length of the rectangle and W is the width of a triangle.
For example:
A triangle with length = 5 cm and Width = 3 cm.
The Perimeter will be:
P = 2×5 + 2×3
P = 10 + 6
P = 16 cm
I think 320 is the answer ✋
Step-by-step explanation:
13.70 square inches of the box is empty
