Answer:
Option D. statistical inference
Step-by-step explanation:
We are given the following situation in the question:
"A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 21 years."
This is a n example of statistical Inference.
- Statistical inference is the procedure of making inference or estimating parameters of a population with the help of test statistics.
- In the given situation the university students are the population and the students of a particular class are sample.
- The professor with the help of sample statistic (mean age of students in class) approximated the mean age of students in the university.
Answer: 80
Step-by-step explanation: Please see attachment for explanation
Answer:
b
Step-by-step explanation:
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Gaming a video-game designer is using the expression 6n3 in a program to determine points earned, where n is the game level.
Given expression is 
. the given expression is for the nth level.
To simplify the expression for the 
level, we plug in in the place of 'n' in the given expression
(multiply the exponents)
