Mental Illness is addressed in a large scope.

What is society's view on mental illness? How do some people differ in opinion? Why do society accept joking about a person having a mental illness and not a physical illness such as cancer? These questions are targeted.

How do I Conclude whether there was a Siginificant Effect?

5. Road accident researchers were interested in the effectiveness of Red Light cameras that can photograph the number plates of cars if they pass through an intersection on a red light. Researchers arranged for speeds to be measured as cars entered intersections. There were two factors under consideration - Presence or Absence of a red light camera, and whether cars were facing a Green or Amber light. The data was collected at four times of day. For this question you will be assigned data from one of these times of day on the basis of the first letter of your last name. If your last name begins with the letters A-E use data from Time 1 If your last name begins with the letters F-... click for more

Critical values for testing correlation (r^2)

1. The IQ scores of 30 children from under-privileged households, were measured before and a year after, a program of nutritional supplementation was instigated at a primary school. Use a two-tailed test. Is there an effect of nutritional supplementation? Submit your answers on a standard answer sheet. (e) Given a (alpha) =0.05, what is the critical value of t? (use a two tailed test) (f) Would an obtained value of t of 2.30 lie within the rejection region? (g) Does nutritional supplementation affect IQ scores (given that the obtained t =2.30)? (h) This result would be reported as: t ( ___ ) = _______, p _____ 0.05, r^2= looking for some steps for e,f,g,h?

Pschological Stats

5. Road accident researchers were interested in the effectiveness of Red Light cameras that can photograph the number plates of cars if they pass through an intersection on a red light. Researchers arranged for speeds to be measured as cars entered intersections. There were two factors under consideration - Presence or Absence of a red light camera, and whether cars were facing a Green or Amber light. The data was collected at four times of day. For this question you will be assigned data from one of these times of day on the basis of the first letter of your last name. If your last name begins with the letters A-E use data from Time 1 If your last name begins with the letters F-... click for more

Psychological Stats

5. Road accident researchers were interested in the effectiveness of Red Light cameras that can photograph the number plates of cars if they pass through an intersection on a red light. Researchers arranged for speeds to be measured as cars entered intersections. There were two factors under consideration - Presence or Absence of a red light camera, and whether cars were facing a Green or Amber light. The data was collected at four times of day. (a) Did the colour of the light (Green or Amber) influence speed, i.e. was there a main effect of Colour. On a standard answer sheet, state clearly the null and alternative hypotheses (in words) in terms of the effects on light Colour ... click for more