Answer: 0.0241
Step-by-step explanation:
The formula we use to find the margin of error :
, where z* = Critical value , n= Sample size and p = Sample proportion.
As per given , we have
n= 2400
Sample proportion of subjects showed improvement from the treatment:
Critical value for 99% confidence = z*= 2.576 (By z-table)
Now , the margin of error for the 99% confidence interval used to estimate the population proportion. :
[Round to the four decimal places]
Hence, the margin of error for the 99% confidence interval used to estimate the population proportion. =0.0241
Answer:
About 30
Step-by-step explanation:
1ST: see how many odd numbers are in 1-6 (which is 3)
2nd: Divide 64 by 3 (when rounded it equals around 30)
S= soft taco
d= double deckers
$11.25= 3s+3d
$10.00= 4s+2d
first eliminate 1 variable, lets say d ,to do this we must cancel them out, to do this multiply the top by -2 and the bottom by 3
-2 ($11.25= 3s+3d) -$22.50= -6s-6d
3 ($10.00= 4s+2d) which becomes... $30.00=12s+6d
then the -6d and the positive 6d cancel out and you are left with 1 variable
after this add the remaining parts to get...
$7.50=6s divide by 6, then put s back into one of your original equations and solve for d then you have found how much each item costs and are finished with the system of equations
Answer: 21
Step-by-step explanation:
21 is 70 percent of 30.
15 is half of 30.
21 is seventy percent.
So, you get your answer. Hope this helps! :)
To graph these equations, you would have to put them into slope-intercept form (y=mx+b) and then graph. Since you get two points from graphing the equation, just add another by choosing a spot where the line intercepts on the graph.
Example: