Answer:
He has 386 egg laying hens.
Step-by-step explanation:
First we must take away the amount of Roosters Uncle Ben has.
440 - 39 = 401
Then we take away the amount of non-egg laying hens he has
401 - 15 = 386
Thus you get your answer:
Uncle Ben has a total of 386 egg laying chickens.
Answer:
Step-by-step explanation:
You need to analize the information given in the exercise.
By definition, there are 360 degrees in a circle.
In this case, you know that the Central angle in degrees of the given sector of the circle is the following:
And the area of that sector is this one:
Then, you need to calculate the number of sectors in that circle.
In order to do it, you have to divide 360 degrees by the central angle of that sector. So, you get:
Knowing that there are 8 sectors in the circle, you need to multiply the area of the sector given in the exercise by 8, in order to calculate the area of the circle.
Therefore, this is (Using ):
Answer:
i need help with this too
Step-by-step explanation:
These questions should be asked more clearly.
If 3% is the standard deviation of the average then a 1% decrease in score is a z=-1/3, which is small in absolute value, so we can't reject the claim. In this interpretation we'd answer: -0.33, no.
But if we'll assume 3% is the standard deviation of the individual samples, it's a different story. We use percent as our unit. The standard deviation of the average is
.
So we get a z (really a t) here of
That's kinda borderline, a one sided t test with 29 dfs will give about the same probability as the normal distribution for a tail z=1.8, p=.036 aka p=3.6%. Typically we'd choose a 1% or 5% rejection threshold before we started; this one is in between.
Answer: 14%
Step-by-step explanation: