<u>Answer with explanation:</u>
As per given , we have
A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.
i.e. n= 50
Degree of freedom = n-1=49
The point estimate of the population mean is equals to the sample mean.
i.e. The best estimate for the length of gribbles= 3.1 mm
Also, population standard deviation is unknown , then the confidence interval would be :
For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :
Now, Margin of error :
95% confidence interval :
Hello,
P:y=ax²+bx+c is the equation.
(0,3)∈P==>3=a*0+b*0+c==>c=3
(1,4)∈P==>4=a+b+3==>a+b=1 (1)
(-1,-6)∈P==>-6=a-b+3==>a-b=-3 (2)
(1)+(2)==>2a=-2==>a=-1
(1)==>b=1-(-1)==>b=2
y=x²+2x+3
y=(x+1)²+2
Vertex is (-1,2)
Answer:
Step-by-step explanation:
Hello
as 9=3*3
12=4*3=2*2*3
35=7*5
36*6*6=2*3*2*3
hope this helps
Answer:
37
Step-by-step explanation:
2a+3b first we substitute the letters with numbers
=(2*11)+ (3*5) then we do the parentheses first
=22+15 then add
=37 so P = 37
Answer:
4 ( not sure what the units are)
Step-by-step explanation:
Just by looking at the slope you can figure out how much it grows per year.
y = mx + b
m = slope
Not sure what units there are in the question just place it in the end.
Hope this helps :)