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: The required fraction would be 
Step-by-step explanation:
Since we have given that
-414 as mixed number,
It should be written as
When we write it as improper fraction, it will be look as
Hence, the required fraction would be
Answer:
1. 44.3
2. 4.43
3. 0.443
Step-by-step explanation:
Answer:
Probability that song selected after first selection is rock = 2/7
Probability that song selected from the remaining after second selection is country rock = 1/2
Step-by-step explanation:
Total number of songs = 7
After first selection, probability that the song selected is rock = 2/7
After second selection, probability that the song selected from the remaining is a country song = 3/6 = 1/2
x = 
is the restricted value
the denominator of the fraction cannot be zero as this would make it undefined.
Equating the denominator to zero and solving gives the value that x cannot be
solve : 8x - 2 = 0 → 8x = 2 → x =
