Answer:
df.= 28
P - value = 0.0124 < 0.05
There is a difference between the mean of the well-being measure for the children of alcoholics, and a mean of the control group.
Step-by-step explanation:
As the given test is dependent or paired test the degrees of freedom is n-1 = 20-1 = 28
The reported t = 2.67
The P value for ∝= 0.05 at calculated t= 2.67 and 28 d.f is 0.0124 which is less than 0.05 .
The null hypothesis is rejected.
The null hypothesis is that there is no difference between the means of the two samples.
H0: u1 = u2
The alternate hypotheis is accepted that there is difference between the means of the two samples.
Ha: u1≠ u2
There is a difference between the mean of the well-being measure for the children of alcoholics, and a mean of the control group.
Answer:
1/4a
Step-by-step explanation:
1/2a +1/2a+b-b
1/4a -0
1/4a ans
Answer:
Step-by-step explanation:
Sampling with replacement means that we choose a marble, note its colour, put it back and shake the box, then choose a marble again.
There are 
marbles in total. The probability that the first chosen marble is blue is 
then Maya replaces this marble and the probability of choosing the second blue marble is the same. Using the product rule, the probability of drawing 2 blue marbles in a row is
8x^2 - 56 + 48
Use the distributive property
8(x^2 - 7 + 6)
Find two factors of 6 that add to -7
The two factors are -1 and -6.
8(x -1)(x-6)
Have an awesome day! :)
Answer:
11/ 14 chance that you will pick a white stone
3/14 chance to picka a black stone
Step-by-step explanation:
Hope that helps
