ANSWER ALL A. A1.What errors might you commit whenever you make inferences about the parameters of the populations? A2. How do you make inferences about the population based on sample information? A3.How do you perform hypothesis about the parameters of one or two populations? A4.Define the terms correlation and correlation coefficients. A5.Outline some of the uses of correlation coefficients. A6.Explain the selection and calculations of correlation coefficients. B. State the null (Ho) and alternative (Ha) for each of the following problems or situations. Determine the type of the alternative hypothesis formulated. B1.A researcher hypothesizes that present average weight of male patients is not the same as the previous years. B2.A pharmaceutical company claims that only 2% of those who take their medicines will experience some side effects A researcher believes that the proportion of those who took their medicines and experienced some side effects is higher than what is claimed. B3. The average age of unemployed persons has changed and is no longer equal to 30.5 years old. B4. The packaging of a certain light bulb states the bulb will last for 8000 hours under normal use. A consumer suspects that the average life is lower than 8000 hours. B5. There is no difference between the average IQ of students enrolled in public and private schools. C. Then, Given in B and to the null and alternative hypotheses that you formulated. Identify/Characterize situations when Type I and Type II errors are committed in each