Answer:
x mean x-mean (x-mean)^2
4.45 8.74 -4.29 18.44
5.50 8.74 -3.24 10.52
5.50 8.74 -3.24 10.52
6.30 8.74 -2.44 5.97
7.80 8.74 -0.94 0.89
11.0 8.74 2.26 5.09
12.2 8.74 3.46 11.95
17.2 8.74 8.46 71.51
mean = average / (n-1) = 69.95 / (8-1) = 8.74
Ok after you do the above table
Add up the last column that will yield: 134.89
Sample variance = 134.99/(n-1) = 134.99/7 = 19.27
Standard deviation is square root of sample variance sqrt(19.27) = 4.39
Step-by-step explanation:
Answer:
5x-18=4x+7 ( vertical opposite angle)
5x-4x=7+18
x=25
The answer is acute. Acute angle is any angle less than 90 degrees. There is no such thing as a 0 degree angle. But there is 180 which is a straight line. Any angle more than 90 degrees is obtuse
The <u>correct answer</u> is:
C) Avoid using unsecured wireless networks.
Explanation:
Using an unsecured wireless network puts your information at risk. If you use an open network, that means that absolutely anyone within range can access the same network you are on, which opens you up to potential scammers, phishers, etc.
On the other hand, using a secured network decreases the number of people on the same network as you, since they will have to have the same password to access the network. This helps prevent your information from falling into the wrong hands.