Answer:
a) 
With:
b) 
c) 
d) 
Step-by-step explanation:
For this case we know the following propoertis for the random variable X
We select a sample size of n = 81
Part a
Since the sample size is large enough we can use the central limit distribution and the distribution for the sampel mean on this case would be:
With:
Part b
We want this probability:
We can use the z score formula given by:
And if we find the z score for 89 we got:
Part c
We can use the z score formula given by:
And if we find the z score for 75.65 we got:
Part d
We want this probability:
We find the z scores:
Answer:
Part A: 1
Part B: -4
Step-by-step explanation:
In a coordinate 
, the x-coordinate represents the input of a function and the y-coordinate represents the output.
Part A:
We're looking for the point the line passes through with an x-coordinate (input) of -3. This point is (-3,1) and therefore the output is 1 when the input is -3.
Part B:
We're looking for the point the line passes through with a y-coordinate (output) of 2. This point is (-4,2) and therefore an input of -4 yields an output of 2.
Answer:
1. Tall Dog
2. Small Dog
3. Regular Dog
4. Fat Dog
Step-by-step explanation:
It's simple. Look at the problem ;)
Answer:
2
Step-by-step explanation:
50=30+3x
(Subtract 30 from both sides)
20=3x
(Divide each side by 3)
6.67=x
She would need to sell 7 plants per day if she wanted to make at least $50 a day if she took the second deal
