Answer:
See below
Step-by-step explanation:
Null Hypothesis: 
, which means that the variance in annual repair costs is the same for both types of automobiles
Alternate Hypothesis: 
, which means that the variance in annual repair costs is larger for older automobiles
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
5 years old:
Mean height (m) = 43
Standard deviation (σ) = 1.8
Height on fifth birthday (x) = 44
7 years old:
Mean height (m) = 48
Standard deviation (σ) = 2.1
Height on 7th birthday (x) = 49
To get the standardized score :
USe :
Zscore = (x - mean) / standard deviation
At 5 years:
Zscore = (44 - 43) / 1.8
Zscore = 1/ 1.8
Zscore = 0.556
At 7 years:
Zscore = (49 - 48) / 2.1
Zscore = 1/ 2.1
Zscore = 0.476
At the different ages, John's growth rate in height declined after the 5 th years as the standardized score at 5 years is greater than at 7 years.
Answer:
y = -7x + 17
Step-by-step explanation:
you want to isolate the 'y' variable, start by distributing -7 on the right side
y + 4 = -7x + 21
now subtract 4 from each side
y = -7x + 17
The answer is 7368 ounces is eqivalent to 921/2 pounds
