435 / 1696
because you first multiply the two mixed fractions and then u divide it with 212
Answer: 478
Step-by-step explanation:
The formula to calculate the standard error of the population mean is given by :-
, where 
is the standard deviation and 'n' is the sample size.
Given: Mean : 
Standard deviation : 
Sample size : 
Now, the value of the standard error of the average annual salary is given by :-
Hence, the standard error of the average annual salary = 478
Answer: B. Controlled experiment
Step-by-step explanation:
This is a controlled experiment because the variables in the question are manipulated by the researcher. We are told that while one group watches television before going to sleep, the other group does not.
The controllers won't have control over the variables that were used if it was an observational study while for a survey, it has to do with collection of information regarding certain topics or happenings in order to have people's perception on the topic or area of interest.
Answer:
32.7, 40.29, 40.3, 43.43
Step-by-step explanation:
Hope this helps =)
Correct me if I am wrong
Domain refers to all of the x-values that satisfy the line, and the range refers to all of the y-values that satisfy the line.
Since t corresponds to the x-ordinates, then the domain becomes:
0 ≤ t ≤ 6
and the range becomes:
0 ≤ v ≤ 150
In short, the answer is (A)
