48x :
6x·3+9x·2+12x
6·3x+9·2x+12x
18x+18x+12x
48x
Answer:
A) 47
B) 65
C) 01
Step-by-step explanation:
A stem and Leaf is a unique way of representing data, in which every data value is split into a “stem” and “a leaf” . The “Stem” is the first Digit of the number and The “Leaf” is the second digit of the data value.
As we seen in the Key provided to us at the foot of the page, 6│3 represent 63,also
6│0 3 4 represents : 60,63,64
0│1 5 8 represents : 01,05,08
Using this rule we expands the data given to us and answer the questions given to us.
A) Number of people represented in data
0│1 1 2 2 3 4 4 4 4 5 8 = 01 01 02 02 03 04 04 04 04 05 08 = 11 Entries
In the same way , we count the other data and see that
Total number of data values are : 11+8+8+9+4+5+2= 47
B) The range of the Data: It the Difference of the largest Data value and the Lowest Data Value
Largest Data Value : 66
Smallest Data Value : 01
Range = 66-01 = 65
C) The mode : It the Data value which is repeated the most:
01 : 4 times
10 : 3 times
31 : 3 times
32 : 3 times
Hence the mode is 01
<span>2/3 or 0.66666
This is a sum of an infinite series problem.
A sequence of 1 will happen with a probability of 0.5
A sequence of 3 will happen with a probability of 1/2^3, 1/8, = 0.125
In general we have an infinite series of
1/2^1 + 1/2^3 + 1/2^5 + ... + 1/2^(2n-1) where n >= 1
The sum of such a series with a constant ratio between sequential terms is
S = s1/(1-r)
where
s1 = first term in the series
r = ratio between terms.
The value for s1 = 0.5 as shown above and the 2nd term is 0.125. So
r = 0.125 / 0.5 = 0.25
And the sum of the infinite series is
S = s1/(1-r)
S = 0.5/(1 - 0.25)
S = 0.5/0.75
S = 2/3
S = 0.666..66
So the probability of the first head coming up in an odd number of tosses is 2/3, or 66.6%</span>