Answer:
554 executives should be surveyed.
Step-by-step explanation:
We have that to find our  level, that is the subtraction of 1 by the confidence interval divided by 2. So:
 level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Z-table as such z has a p-value of  .
.
That is z with a pvalue of  , so Z = 1.96.
, so Z = 1.96.
Now, find the margin of error M as such

In which  is the standard deviation of the population and n is the size of the sample.
 is the standard deviation of the population and n is the size of the sample.
Standard deviation of 3 hours.
This means that 
The 95% level of confidence is to be used. How many executives should be surveyed?
n executives should be surveyed, and n is found with  . So
. So






Rounding up:
554 executives should be surveyed.
 
        
             
        
        
        
2 x 10^2 because 2 x 10^2 is 200 in standard form and 200 is greater than 1.
 
        
             
        
        
        
Answer:
The value of the car in very nice condition is $28,500.
Step-by-step explanation:
Consider the provided information.
In 1955 an antique car that originally cost 3,943 is valued at 64,125 if in excellent condition, winch is 2 1/4 times as much as a car in very nice condition.
The mixed fraction can be written as:

Let x is the value of car in very nice condition.



Hence, the value of the car in very nice condition is $28,500.
 
        
             
        
        
        
Answer:
f(1/3)=3 try that its probably right
 
        
             
        
        
        
Answer:
D) 32,357mm^3
Step-by-step explanation:
Given



First, we calculate the volume of 1 roll.
The volume of the cylinder is:

Where



And the thickness represents the height.
So: 
The volume is:


The volume of the 40 is:


The closest option is (d):