a technician draws 10 cc of a patients blood to be tested for cholesterol and for red blood cells.
identify
a.the sample
b.the population
c. the variable being studied
i attempted but im not sure if its right...i said
a) the 10 cc of blood
b) the patients blood
c)the blood is being tested but do i out that or what its being tested for
a) and b) look ok. The problem states what the variables are: You want to find the values of cholesterol and red blood cell count. (two variables) Probably the actual variables are
cholesterol concentration (mg/cc)
blood cells (no./cc)
or some such units
Your attempts are on the right track! Let's go through each option to identify them correctly:
a) The sample: The correct answer is the 10 cc of blood. In this case, the technician drew 10 cc of blood from the patient for testing purposes. This is the specific portion or specimen that will be used in the analysis.
b) The population: The correct answer is the patient's blood. The population refers to the entire group or category that you want to make inferences about. In this case, the population is the patient's blood because the technician is collecting a sample from one patient to study their blood.
c) The variable being studied: The correct answer is cholesterol and red blood cells. The variable being studied refers to the specific characteristics, factors, or attributes that you are interested in analyzing. In this scenario, the technician is testing the patient's blood for cholesterol levels and red blood cells count. These are the variables of interest.
So, in summary:
a) The sample: 10 cc of blood
b) The population: The patient's blood
c) The variables being studied: Cholesterol and red blood cells levels