Step-by-step explanation:
The formula is that the whole series is divide by 4
64 ÷ 4 = 16 ÷ 4 = 4 ÷ 4 = 1
Answer:
df refers to degrees of freedom.
the specific value of df in the example is 21.
Step-by-step explanation:
In statistics, <em>degrees of freedom</em> is the number of values in the final calculation of a statistic that are free to vary. It is the number of independent ways by which a dynamic system can move, without violating any constraint imposed on it.
In other words,<em> degrees of freedom is </em>the number of independent pieces of information that went into calculating the estimate, and calculated by
n – 1 where “n” is the number of items in your set.
In the question, a simple random sample of 22 speeds of cars on California Highway 405 is to be used to test the claim, thus the number of items in the survey are 22.
From this we get:
df=22-1=21
Answer:
D. a + 2 = 5
Step-by-step explanation:
apples + 2 more = 5 total
Answer:
6 hours
Step-by-step explanation:
speed = distance/ time
6000meters to km = 6000/1000= 6km
speed for the first race = 6/2
speed = 3km/hr
for the second race
speed = distance/time
3 = 18/time
cross multiply
3* t = 18
divide both sides by 3
t = 18/3
t = 6 hours
Answer:
The width of the piece of construction paper is 12 inches.
Step-by-step explanation:
The length of the construction paper= 4 3/16 in log
⇒Length of the paper = 4.1875 inches
Let the width of the paper = w inches
The area of the paper = 50 1/4 sq. inches.
⇒Area of the paper = 50.25 sq. inches
Now, Area of the paper = LENGTH x WIDTH
or, 50.25 sq. inches = 4.1875 inches x w
⇒ w = 50.25 / 4.1875 = 12 in
or, w = 12 in
Hence, the width of the piece of construction paper is 12 inches.
