Answer:
There is no statistical evidence to support that mean is less than 8000 at 10% level
Step-by-step explanation:
Set up hypotheses as
(Left tailed test)
The data for the observations are
7251 6871 9632 6866 9094 5849 8957 7978 7064 7494 7883 8178 7523 8724 7468
From the above data we find that
Mean difference= -211.2
Test statistic t = mean difference/std error = -0.844
df = 14
p value= 0.20643
Since p >0.10 we accept H0
There is no statistical evidence to support that mean is less than 8000 at 10% level
Answer:
Dilation
Step-by-step explanation
In geometry, a transformation that enlarges or reduces a polygon by a certain scale factor around a particular center point is called dilation. A scale factor is the amount by which an image grows or shrinks .In this case, dilution requires us to multiply initial dimensions by the scale factor to obtain the dimensions of the image.
Answer: 0.0375
Step-by-step explanation:
9/20 divided by 3/4 =0.0375
Need more information to answer the question
1. 1/5 = x - 9 / x
2. Cross multiply x = 5 (x - 9)
3. Distribute x = 5x - 45
4. Move the variable and change the sign x - 5x = -45
5. Add like terms -4x = -45
6. Divide x = 45 / 4
So the solution is x = 45 / 4 or 11.25
