What is the mean average<br>
14, 12, 9, 2, 3, 1, 1<br><br>
10,10,10,5,9,12,12,24,8,31,3,10
Orlov [11]
Answer:
20.89
Step-by-step explanation:
x f fx
1 6 6
2 4 8
3 5 15
4 3 12
5 3 15
6 2 12
8 1 8
9 2 18
10 4 40 average=fx/f
12 3 36 = 961/46
14 2 28 = <u>20.89</u>
19 1 19
24 1 24
26 1 26
31 1 31
32 1 32
56 1 56
67 1 67
100 1 100
102 1 102
150 1 150
156 1 156
total: <em>46</em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>961</em>
The given problem describes a binomial distribution with p = 60% = 0.6. Given that there are 400 trials, i.e. n = 400.
a.) The mean is given by:

The standard deviation is given by:

b.) The mean means that in an experiment of 400 adult smokers, we expect on the average to get about 240 smokers who started smoking before turning 18 years.
c.) It would be unusual to observe <span>340 smokers who started smoking before turning 18 years old in a random sample of 400 adult smokers because 340 is far greater than the mean of the distribution.
340 is greater than 3 standard deviations from the mean of the distribution.</span>
Answer:
All of the options when substituted for b will make the root of b irrational
Step-by-step explanation:
Mathematically, surds are roots of non-perfect squares and they are tagged as irrational numbers
For b to be irrational, all of the numbers given would fit. This is because all of these numbers are non-perfect squares meaning they do not have square root.
So what this mean is that these numbers when put under the root umbrella are irrational numbers as they are not perfect squares
Answer:
R72. 80
Step-by-step explanation:
1KG = R36, 40
2KG = R36.40 X 2
= R72. 80