Answer:
0.15866.
Step-by-step explanation:
We have been given that on average, electricians earn approximately μ= $54,000 per year in the united states. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is σ= $12,000. We are asked to find the probability that the sample mean is greater than $66,000.
First of all, we will find the z-score corresponding to 66,000 using z-score formula.
Now, we need to find the probability that z-score is greater than 1 that is 
.
Upon using formula 
, we will get:
Upon using normal distribution table, we will get:
Therefore, the probability that the sample mean is greater than $66,000 would be 0.15866 or approximately 
.
The 3 outside angles of a triangle need to equal 360 degrees.
To find X, subtract the 2 outside angles shown from 360.
X = 360 - 130 - 134 = 96
The answer is 96
<span>When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. If you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.</span>
the triangle formed by sides 10, 9 and 15 units can't be a right angled triangle, because they doesn't form the pythagorean triplet, that is the sum of squares of the smaller sides isn't equal to the square of largest side,
sum of squares of smaller sides
=》
=》
=》
now, square of largest side (hypotenuse)
=》
=》
they aren't equal, proved
