The z-score for 81 is 1.75
<h3>How to determine the z-score for 81?</h3>
The given parameters are:
μ = 60 , X=81, and σ = 12
The z scores is calculated using:
Substitute the given values
Evaluate the difference
Simplify
z = 1.75
Hence, the z-score for 81 is 1.75
Read more about z-scores at:
brainly.com/question/25638875
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The answer is: The product 
is a radical multiplied by an integer and the result is 
By definition, the set of integers has: negative numbers, positive numbers and zero.
Radicals are also known as roots and can be written with the symbol:
![\sqrt[n]{} ](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7B%7D%20%0A%20)
, where "n" is the index.
Normally, when a radical is multiplied by an integer, you must simplify it, but in this case you can calculate the result by using your calculator.
Answer:
Step-by-step explanation:
If p and q are two statements, then you can use the following table to find the value of 
If
p: 7 is an even number - is false, because 7 is not an even number (F)
q: 3 is the square root of 9 - true, because 3 is the square root of 9 (T),
then according to the above table, 
is true.
Correct option
Answer:
72
Step-by-step explanation:
For Q 1 : 25 % of the scores are below this value. The area under the bell-shaped curve of the normal distribution is 0.25. And since we have 288 electricians that took a certification test:
0.25 * 288 = 72.
Answer:
Step-by-step explanation:
(3 to the square root (7)) - (5 to the square root (7))
we get
52.38
hope this helps you
