A family of three children, what is the probability of 2 boys and 1 girl?
1 answer:
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Answer:
Standard deviation = 14.064
Step-by-step explanation:
We are given the following data;
X X -
20 20 - 46 = -26 676
23 23 - 46 = - 23 529
32 32 - 46 = -14 196
36 36 - 46 = -10 100
41 41 - 46 = -5 25
43 43 - 46 = -3 9
44 44 - 46 = -2 4
45 45 - 46 = -1 1
47 47 - 46 = 1 1
54 54 - 46 = 8 64
55 55 - 46 = 9 81
59 59 - 46 = 13 169
61 61 - 46 = 15 225
63 63 - 46 = 17 289
66 66 - 46 = 20 <u> 400 </u>
<u>= 2769 </u>
Firstly we will calculate Mean, =
= 45.93 ≈ 46
Now, Standard deviation formula is given by;
s = =
= 14.064 .
Answer:
4
Step-by-step explanation:
Calculate Greatest Common Factor for :
16, 24 and 36
Factorize of the above numbers :
16 =
24 = • 3
36 = •
Build a prime factors table
Number of times each prime factor
appears in the factorization of :
Prime Factor Number 16 Number 24 Number 36 G.C.F (min)
2 4 3 2 2
3 0 1 2 0
GCF = 2²
Greatest Common Factor is :
4
Hope this helps :)