Gdefine simple random sampling. choose the correct answer below. a. simple random sampling is the process of obtaining a sample of size n from a population of the same size n. the sample is then called a simple random sample. b. simple random sampling is the process of using chance to select individuals from a population to be included in the sample. the sample is then called a simple random sample. c. a sample of size n from a population of size n is obtained through simple random sampling if every possible sample of size n has an equally likely chance of occurring. the sample is then called a simple random sample. d. simple random sampling is the process of selecting individuals from a population using a convenient sample. the sample is then called a simple random sample.

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

The measure of angle 0 is 600 degrees

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above