3. Suppose we wanted a sample of exactly 5 out of the population of 3000 by using 1 in k Systematic Sampling. What should the value of k be? 5. True or False? If false, please change the statement to make it a true statement. Inferential statistics uses sample statistics to estimate population parameters. The bar graph is used for categorical data, whereas the histogram is used for numerical data The class marks in a histogram are the midpoints of the bars of the histogram, DeMorgan's law states the following: P(A or B)' = P(A' and B') If two events are mutually exclusive then they must be independent. A stratified sample ensures that the sample is representative of all strata With cluster sampling, the best results occur when elements within clusters are internally homogeneous With stratified sampling, the best survey results occur when elements within strata are internally homogeneous. Calendar times and clock times are ratio scale. The bar graph is used for categorical data, and depicts all the parts of a whole. 6. The probability that a student prefers lifting weights to doing aerobic exercise is .21. What is the probability that of two students randomly chosen, at least one prefers weights? 7. A population is made up of 22 males and 21 females. How many ways are there to choose a sample made up of 5 males and 4 females? What type of sampling was used? 8. The sampling technique where a few naturally occurring groups are randomly chosen from all possible groups in the population, and then all subjects belonging to the chosen groups are sampled is known as _sampling. Differences between groups are _differences within a group are