Answer:
Step-by-step explanation:
Let us first generate the frequency table from the information given:
Hurricane number(X) Frequency(f) f(X)
6 9 54
8 13 104
12 16 192
14 12 168
Total ∑(f) = 50 ∑f(x) =518
In order to determine the last frequency (the remaining years), we will add the other frequencies and subtract the answer from 50, which is the total frequency (50 years). This is done as follows:
Let the last frequency be f
9 + 3 + 16 + f = 50
38 + f = 50
f = 50 - 38 = 12
Now, calculating mean:
![\bar {X} = \frac{\sum f(x)}{\sum(f)} \\\\\bar {X} = \frac{518}{50} \\\\\bar {X} = 10.36](https://tex.z-dn.net/?f=%5Cbar%20%7BX%7D%20%3D%20%5Cfrac%7B%5Csum%20f%28x%29%7D%7B%5Csum%28f%29%7D%20%5C%5C%5C%5C%5Cbar%20%7BX%7D%20%3D%20%5Cfrac%7B518%7D%7B50%7D%20%5C%5C%5C%5C%5Cbar%20%7BX%7D%20%3D%2010.36)
Therefore mean number of hurricanes = 10.4 (to one decimal place)
The number of squares on a chess or checker board is 64 and to find the square root of 64 which is 8*8=64 so the answer is 8
Answer:
I believe the correct answer is option B
Answer is b my friend hope it helps if ya need me to explain I can for u:3