1. You wish to estimate the mean cholesterol levels of patients two days after they had a heart attack. To estimate the mean, you collect data from 28 heart patients, state the individual, variable, population, sample, parameter, and statistic.
2. Print-O-Matic would like to estimate their mean salary of all employee. To accomplish this, they collect the salary of 19 employees. State the individual, variable, population, sample, parameter, and statistic.
3. You collect the weights of tagged fish in a tank. You then put an extra protein fish food in water for the fish and then measure their weights a month later to see if the new food resulted in increased weight. Are the two samples matched pairs? why?
4. There is a study that shows that people who are obese have vitamin D deficiency. can it be concluded that obesity causes a deficiency in vitamin D? if yes or no, why
5. A survey was conducted at a college asking all employees if they were satisfied with the level of security provided by the security department. Employees were asked to indicate whether they strongly agreed, agreed, neutral, disagreed or strongly disagreed. how could this survey question be re-written to provide more meaningful results?