Answer:
The significance level of difference in fhe two means is indeed 0.26.
Step-by-step explanation:
To obtain the significance level, just standardize the mean in 2012 with the new mean and standard deviation.
The standardized score (z) is the value (x) minus the mean (xbar) then divided by the standard deviation (σ)
z = (x - xbar)/σ = (49007 - 49800)/3100 = - 0.26
Therefore, the significance level of difference is indeed 0.26.
Answer:
i think its #1
Step-by-step explanation:
exceed seems like it means for the number not to go over 10. so maybe its the 1st option. Hope this helps!!
my friend, I will give you the answer, It's b, Good luck man
Answer:
75
Step-by-step explanation:
We need to create an equation for this.
Let x be the number we want to find.
Then
1/2x + 16 = 2/3x - 4
Multiplying both sides by the common denominator 6, we have
3x + 96 = 4x - 24
x = 120
Inserting 120 into the equation to check, we have
1/2 (120) + 16 = 2/3 (120) - 4
76 = 76