Consider sample of size 3 selected from the population (3,6,9,15).calculate the sample mean,median and the range for each sample

Fund the mean and variance for the following sample data 12, 16, 11, 23, 9, 17, 12, 25

There are eight patients waiting in a doctor's waiting room.  They have been waiting for 9 minutes, 2 minutes, 5 minutes, 4 minutes, 12 minutes, 7 minutes, 8 minutes, and 11 minutes.  Calculate the sample variance for the patients' wait times (in minutes squared). Round to the nearest hundredth as needed.

table 1 gives flight arrival numbers from a random sample of flights for airlines.  Airline 1  early =133  on-time = 416+ late =150 total 699..  Airline 2 early =58  on-time =354 late =87 total =499.  total early = 191  on-time =770  late =237  overall total =1198 . Test whether there is a difference between the two airlines in the percent of flights that arrive late.                                                                                        FIND THE RELEVANT SAMPLE PROPORTIONS IN EACH GROUP AND THE POOLED PROPORTION.                                                                    P HAT 1=  ? P HAT 2= ?  P HAT =  ?                                                                                                                    STATE THE NULL AND THE ALTERNATIVE HYPOTHESES?                                                                                      GIVE THE TEST STATISTIC AND THE P-VALUE?…

What is the sample for the study

Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience. Professor Cuellar uses a computer to generate 20 random student ID numbers, then interviews the students corresponding to those numbers.

List three types of samples and explain it.

Define Sample?