Answer:
A sample of 17 must be selected.
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 Z-table as such z has a p-value of 
.
That is z with a pvalue of 
, so Z = 2.054.
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.
The standard deviation from a previous study is 4 hours.
This means that 
How large a sample must be selected if he wants to be 96% confident of finding whether the true mean differs from the sample mean by 2 hours?
A sample of n is required.
n is found for M = 2. So
Simplifying both sides by 2:
Rounding up:
A sample of 17 must be selected.
Answer:
width=x
length=5x
area= 300ft2
area=lxb
300=5x(x)
300=5x^2
x^2=60
x=7.74
7.74(5)=38.7
dimensions are 38.7ft by 7.74 ft
<u><em>Please mark as brainliest</em></u>
Answer:
34 would be a Rational number
Step-by-step explanation:
it's clean number and not sloppy like 0.888883
4 meters = 400 cm
The bird is 400 cm above the ground, and the squirrel is 74 cm below the bird.
400 - 74 = 326 cm
Plot the points and do length times width to find the area.
