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.
Answer:
14 = x
Step-by-step explanation:
-2 on both sides you get 7 = x/2, multiply both sides by 2 and you get 14 = x
Answer:
For measuring such small amounts of medicine, your doctor may give you a 1 cc syringe (there is that cubic centimeter thing again - remember, it is the same as a milliliter - ml).
...
measurement of medicines.
1/4 teaspoon 1.25 ml
1 teaspoon 5 ml
1-1/2 teaspoon 7.5 ml
1 tablespoon 15 ml
Step-by-step explanation:
Using the given center and point at the circumference, the equation of the circles are:
- a)

- b)

- c)

<h3>
What is the equation of a circle?</h3>
- The equation of a circle of radius r and center
is given by:

Item a:
- Center C(5,2), hence
.
The point at the circumference is A(11,10), hence:



Hence:

Item b:
- Center C(-2,-5), hence
.
The point at the circumference is A(3,-17), hence:



Hence:

Item c:
- Center C(5,-1), hence
.
The point at the circumference is A(-2,-5), hence:



Hence:

You can learn more about equation of a circle at brainly.com/question/24307696
Answer:
take the reciprocal of the initial value "a"
Step-by-step explanation:
From my past learning my teacher have taught me this.
If incorrect let me know
Hope this helps