Answer:
Step-by-step explanation:
Hello!
The mean is a measurement of central tendency that shows what is the most expected value of the variable. The standard deviation is a measurement of variability, it shows you how distant or dispersed are the values of a certain population or sample in regards to the value of the mean.
In this example the variable is X: score obtained on a math test.
It's mean is μ= 52 and its standard deviation is σ= 10
To know how many standard deviations away is a value of X concerning the mean you have to first subtract the mean to the value of X, X - μ, and then you have to divide it by σ:
(X - μ)/ σ
If X=76
(76 - 52)/ 10= 2.4
The score obtained by Andrea is 2.4σ away from the mean.
I hope it helps!
Answer:
214 trucks
Step-by-step explanation:
Un= amount after a certain time period
Uo= initial amount
n= number of time periods
i= interest rate
Equation used : Un= Uo (1+i)^n
Un=100(1.1)^8 = 214.36 , but you can't have half a truck so round and the answer would simply be 214.
Answer:
Hello!!
Diego is 59.5 inches tall. His brother is 40.125 inches tall. How much taller than his brother is Diego?
Diego is 19.375 inches taller than his brother.
Step-by-step explanation:

Hope this helps!!
<span>The length of a rectangle is five times its width, and if the perimeter of the rectangle is 96 m then the length would be 19 m.</span>
Answer:
80
Step-by-step explanation: