Answer:
6.5 %
Step-by-step explanation:
The simple interest formula is
I = Prt
Data:
I = $1755
P = $3000
t = 9 yr
Calculation:
1755 = 3000 × r × 9
1755 = 27 000 r
Divide each side by 27 000
r = 1755/27 000 = 0.065 = 6.5 % APR
The annual percentage rate was 6.5 %.
Answer: 9% parameter, 3% statistic
Step-by-step explanation: Parameter and statistic are are statistical terms used to describe a group or observation.
However, the distinction between a parameter and a statistic is in the measured observation.
Parameter is used to describe an entire population while statistic is used to describe a sample.
Where a population refers to the entire number of people or inhabitant of a particular country while a sample refers to a subset of observation drawn randomly from a population which serves a representative of the entire population.
In the question above, 9% is used to make a description of the whole American population who are at least 75 years of age. While,
3% is used to describe a subset of the American population (sample) who are 75 years or older.
To solve this, take the total distance (5,280) divide by the average step (42).
5,280/42 = 125.714
