Question 5 (Mandatory) (2 points) Identify measurement scales: Temperature in degrees Fahrenheit of an automatic popcom poppers. Ordinal Nominal Ratio Interval Question 6 (Mandatory) (2 points) A study investigated the effects of Ginkgo biloba on memory and concentration. The subjects were 230 healthy people over 60 years old. They were randomly assigned to take either Ginkgo biloba or a placebo pill. All subjects took a set of tests for learning and memory at the start of the study and the same tests again after six weeks of taking their assigned pills. The improvement in test scores after the 6 weeks was recorded for each subject. The gingko group average improvement was 3 points higher than the placebo group. When the researchers looked at other factors, they found the second group contained all of the people who regularly exercise (among the 230 participants). This raised the question of whether the difference between memory test scores was due to the gingko or due to the exercise activity level. This is an example of possible: Replication Confounding O Variation Blocking Question 7 (Mandatory) (2 points) Find the class width for the frequency distribution below! Clea Hecuckcy -13 8 1410 20-25 26-31 07 05