Answer: We reject the null hypothesis and conclude that the treatment group has errors that vary significantly more than the errors of the placebo group.
Step-by-step explanation:
Null hypothesis : Var1 = Var 2
Alternative hypothesis : Var1 > Var 2
The F test statistic is the ratio of squared sample standard deviation:
F= (2.4)^2 / (0.75)^2 = 5,76/ 0,5625 = 10.24
Now we have to get the critical from the F table with degrees of freedom ( n1-1,n2-1)=(23,23) :
From the F table ,F(0.05) = between 2.0050 and 2.0476 .
General rule : if the value of the test statistic is in a rejection region . Reject We reject the Null hypothesis .
F= 10.24 > 2.0476 . Therefore we reject the null hypothesis .
Conclusion: The errors of the treatment group vary more than the error of the placebo group .
Straight line equation has a general form of
Where m is the slope
and c is the y intercepted part.
So now, you need to find the value of the slope (m) and the y intercept (c).
As you can notice the line intercepts with y axis in (0,1) So c=1.
And then you want to find 2 points along that line to found the slope from, we found on already (0,1) and the other one can be any point along the line, let's take (2,3).
Then use them to find the slope.
So now
m=1 and c=1.
The equation of this line is y=x+1
Hope this helps!
Answer:
point C
Step-by-step explanation:
all of the others go up by twos but point C went up to 8 instead of 6
We have to calculate the volume of the pond first
a = 25cm
b = 10cm
c = 15cm
a × b × c =
25cm × 10cm × 15cm =
3/5 of the pond is filled up, which means we still need to fill up 2/5 of the pond.
One fifth of the pond:
3750 ÷ 5 = 750
Two fifths of the pond:
750 × 2 = 1500
^This is the final answer