Answer:
The null hypothesis is: 
The alternative hypothesis is: 
Step-by-step explanation:
Consider the provided information.
It is given that the average air pressure in footballs used by the Patriots was significantly less than the allowable limit of 12.5 psi.
The null hypothesis indicates that there is no substantial difference between given populations, due to sampling or experimental error, any observed difference.
Therefore, the null hypothesis is: 
The required alternative hypothesis is: 
Answer:
15 cm
Step-by-step explanation:
so:
if A= b x h and web have b Just Do the inverse formula:
H = a/b h=120/8 = 15 cm
Sorry for my bad English but I'm italian
Answer:
no
Step-by-step explanation:
all integers are not real numbers.integers are negative and positive numbers. but real numbers don't include negative numbers.
15=5(y)
Divide both sides by 5.
3=y
Because it is not a decimal that means it is 300% not 30%. 15 is 300% of 5.