Simplify the expression
-15x4y3+3x3y2
Hope this helps! :)
~Zain
Answer:
H0 : μd = 0
H1 : μd ≠ 0
Test statistic = 0.6687 ;
Pvalue = 0.7482 ;
Fail to reject H0.
Step-by-step explanation:
H0 : μd = 0
H1 : μd ≠ 0
Given the data:
Before: 15 26 66 115 62 64
After: 16 24 42 80 78 73
Difference = -1 2 24 35 -18 -9
Mean difference, d ; Σd / n
d = Σx / n = ((-1) + 2 + 24 + 35 + (-18) + (-9))
d = Σx / n = 33 / 6 = 5.5
Test statistic = (d / std / sqrt(n))
std = sample standard deviation = 20.146
Test statistic = 5.5 ÷ (20.146/sqrt(6))
Test statistic = 0.6687
The Pvalue :
P(Z < 0.6687) = 0.7482
At α = 0.05
Pvalue > α ; Hence we fail to reject H0
The data does not suggest a significant mean difference in the average number of accidents after information was added to road signs.
okay, what numbers do you have to divide?
Hello!
<h3><em><u>Answers</u></em></h3>
1. 
Simplest form: 
2. 
Simplest form: 
3. 
Simplest form: 
4. 
Simplest form: 
5. 
Simplest form:
6. 
Simplest form: 
<h3><em><u>Explanation:</u></em></h3>
Simply add the numerators of the like fractions together. The denominators remain the same.
A home mortgage is usually D.20-30 years
