The mean Verbal SAT score for the population of first students at Radford is 520. The
standard deviation of scores in this population is 95. An investigator believes that the mean
Verbal SAT of first year psychology majors is significantly different from the mean score of the
population. The mean of a sample of 36 first year psychology majors is 548. Test the
investigator's prediction using an alpha level of .05.
The following are the pre and post test scores of 10 pupils before and after having
given remedial teaching and learning activities in Mathematics:
Pre-test: 75, 50, 46, 62, 57, 54, 39, 49, 52 and 36
Post-test: 85, 70, 66, 71, 80, 81, 68, 60, 81 and 58.
Did the group make a significant gain as a result of the activity? Use 0.01 level of significance in
testing the hypothesis.
On the basis of her experience with clients, a clinical psychologist thinks that depression may
affect sleep. She decides to test this idea. The sleep of nine depressed patients and eight
normal controls are monitored for three successive nights. The average number of hours slept
by each subject during the last two nights is shown in the following table:
Hours of Sleep
Depressed Patients Normal Controls
7.1 8.2
6.8 7.5
6.7 7.7
7.3 7.8
7.5 8.0
6.2 7.4
6.9 7.3
6.5 6.5
7.2
An investigator predicts that dog owners in the country spend more time walking their dogs than do dog owners in the city. The investigator gets a sample of 21 country owners and 23 city owners. The mean number of hours per week that city owners spend walking their dogs is 10.0. The standard deviation of hours spent walking the dog by city owners is 3.0. The mean number of hours country owners spent walking their dogs per week was 15.0. The standard deviation of the number of hours spent walking the dog by owners in the country was 4.0. Do dog owners in the country spend more time walking their dogs than do dog owners in the city?
Critically analyse the progress of the implementation of policies and legislation on Inclusive
Education in South Africa or any other country of your choice. Provide a critical analysis of the
policies related to Inclusive Education. Why do you think that many countries, including South
Africa, are failing to implement these policies?
When healthcare staff have less time available than what is needed to do their work the following symptoms appear (select all that apply):
The aviation industry was able to become highly reliable over time due to improvements related to.......?
Weick and Sutcliffe's model for high reliability organizations include the following components
The Joint Commission model for high reliability organizations include the following components:
We covered trait theories (i.e., personality characteristics that can be measured along a scale or continuum, with people ranging from low to high on each characteristic). I would like you to discuss the three trait theories: the three-factor (PEN) model, the five-factor/Big Five (OCEAN) model, (HEXACO) model.