Answer:
A sample size of at least 737 specimens is required.
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:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the width M as such
In which 
is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
So:
A sample size of at least 737 specimens is required.
Answer:
Step-by-step explanation: The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height.
Answer:
Multiply a fraction by its reciprocal to show that their product is always 1
Step-by-step explanation:
Set up a system of equations:
x + y = 0.6
x - y = 7.2
You can solve using elimination. Add the two equations together:
2x + 0y = 7.8
2x = 7.8
x = 3.9
Then plug the number back into either of the two original equations to solve for y:
3.9 + y = 0.6
y = -3.3
The two numbers are 3.9 and -3.3
A) (32 4/5) / ( 8 1/5) = how many hours Mr. Maxwell wrote
B)
(32 4/5 ) / (8 1/5) = 4 hours
converting mixed numbers to fractions, the initial equation becomes,164 / 5 <span>÷ </span>41 / 51<span>
Applying the </span>fractions formula for division,<span><span>=<span><span>164×5 / 5</span><span>×41
</span></span></span></span>
=820/205<span><span><span><span>
</span></span></span></span>
Simplifying 820/205, the answer is<span>=4</span>
