For the following investigative scenarios, state the null hypothesis, and the alternative hypothesis. Also identify the Type 1 and Type 2 errors which can result based on the hypotheses that you defined.
(a) You are a member of the HR department and a number of employees have to come to you claiming that they are suffering from deteriorating eyesight because they are working on computers for more than 4 hours a day.
(b) You are the administrator for a local hospital, and a large number of parents have come to you voicing concerns that placing infants in incubators leads to claustrophobia later in life.
(c) You are a member of the Facilities department, and a number of employees have come to you with the suggestion to place live plants in the office area to reduce the number of sick days taken by employees who work in that office.
Explain whether a survey or an experiment would be most appropriate to find out about the following:
a) who is likely to win the 2016 Presidential election
b) whether nicotine gum reduces cigarette smoking
c) whether there is a relationship between height and wealth
d) whether a public service advertisement campaign has been effective in slowing the use and sales of SUVs
In your response consider whether conducting an experiment will be feasible.
The solution provides Null Hypothesis and Alternative Hypothesis for a set of problems