Answer:

And replacing we got:


Step-by-step explanation:
For this case we have the following info given:
represent the mean
represent the deviation
We select a sample size of n=100. This sample is >30 so then we can use the central limit theorem. And we want to find the distribution for the sample mean and we know that the distribution is given by:

And replacing we got:


Answer: a.) A rate of pay for hours worked exceeding 40 hours
Step-by-step explanation:
Just like in the NBA or any sport there can be a section of overtime when the clock runs out and both sides are tied. In this problem overtime means that george can work more than he has to in order to make more money. The key word "exceeding" is just a synonym for more so that's how they try to trick you
Okay, we need two equations for this:
a will represent adults, and k, kids
a + k = 168
a = 168 - k
300a + 150k = 43200
Replace a:
300(168-k) + 150k = 43200
50400 - 300k + 150k = 43200
-150k = -7200
15k = 720
k = 48
168 - 48 = 120
46 children and 120 adults attended
No the two side lengths are supposed to be larger than the third side length