Answer: 
Step-by-step explanation:
Given : Sample size : n= 9
Degree of freedom = df =n-1 =8
Sample mean : 
sample standard deviation : 
Significance level ; 
Since population standard deviation is not given , so we use t- test.
Using t-distribution table , we have
Critical value = 
Confidence interval for the population mean :
90% confidence interval for the mean value will be :
Hence, the 90% confidence interval for the mean value=
Answer:
A natural disaster that affects a small number of organisms.
Step-by-step explanation:
A natural disaster that affects a small number of organisms since a natural disaster is a sudden and unpredictable for the most part. Due to this, animals don't have time to adapt and this will not affect the evolution process of those species since they are likely to die within a short period of time after the calamity occurs. They will not have enough time to save their own lives so can you expect them to evolve and grow wings to fly away?
Answer: Company B
Step-by-step explanation:
First we must calculate the area of the carpet. Variable A represents area.
So the area of the carpet is 168 square feet.
To find what company A will charge we will multiply the 168 by 2.75 they charge per square foot.
Company A charges, $462, while Company B will charge $450 for the one room.
This means Company B has the better price.
17,500 / 700 = 25 15 year old trees you will need
Hope this helped
