Question:

In the article by Gadd and Phipps (2012), they refer to the challenges faced by psychological and, specifically, neuropsychological assessment. Their study focused on a preliminary standardisation of the Wisconsin Card Sorting Test (a non-verbal measure) for Setswana-speaking university students. The US normative sample is described as participants (N = 899) from both genders who were screened beforehand to exclude individuals with a history of neurological, learning, emotional and attention difficulties. The South African sample consisted of university students (N = 93) from both genders, between the ages of 18 and 29, who were screened in terms of hearing and visual impairments and any history of psychiatriceurological difficulties. The latter was done to prevent contamination of the results by these variables. The students were from the University of Limpopo, Medunsa Campus. Answer Questions 1 to 5.

Question 5

Gadd and Phipps (2012) found that the results of the South African sample on the Wisconsin Card Sorting Test did not resemble a normal distribution and could not be converted to a normal distribution. This implies that the ...

(1) mean performance of this sample cannot be calculated

(2) standard deviation will differ below and above the mean

(3) mean and standard deviation do not provide a predetermined distribution of performance

(4) results cannot be replicated

Would 1 be the correct answer?

1. Compute the Jordan canonical form, and compute a matrix V such that VAV is in the Jordan canonical form: A) 0 O 0 2 0 BY -2 0 1/3 -5/3The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of pet food. A random sample of 12 equal-sized stores is selected. The shelf space (X) and sales for the week in dollars (Y) are observed. a. Is it necessary to compute the Durbin-Watson statistic in this case? Explain. b. Under what circumstances is it necessary to compute the Durbin-Watson statistic before proceeding with the least-squares method of regression analysis? a. Select the correct answer below. OA. Yes, because the number of observations is sufficiently small that autocorrelation is a concern. OB. No, because the number of observations is sufficiently small that autocorrelation is not a concern. Oc. No, because the data were not collected over time. OD. Yes, it is always necessary to compute the Durbin-Watson statistic. b. Select the correct answer below. OA. If a single store had been selected and studied over a period of time, it would be necessary to compute the Durbin-Watson statistic. OB. If fewer stores had been selected, it would be necessary to compute the Durbin-Watson statistic. Oc. If a larger number of stores had been selected, it would be necessary to compute the Durbin-Watson statistic. OD. It is always necessary to compute the Durbin-Watson statistic.Use MATLAB to perform these calculations with No Input Using MATLAB. Such as splinep, interp, ect, Hint: A simple loop may solve it. Euler's Method (First Order Runge-Kutta) Second Order Runge-Kutta - Fourth Order Runge-Kutta dx 2 - X-loy ot y = 10X - V etDetermine Irvhether the value is a discrete random variable. continuous random variable. or not a random variable. a. The distance a baseball travels in the air after being hit b. The number of people in a restaumnt that has a capacity of 100 c The gender of college students d. The number oftextbook authors novv sitting at a computer e. The number of bald eagles in a country f. The exact time it takes to evaluate 2? plus Ha. Is the distance a baseball travels in the air alter being hit a discrete randomvariable. a continuous random variable. or not a random variable? A. it is a continuous random variable. B. It is a discrete random variable. C. It is not a random variable. b. Is the number of people in a restaurant that has a capacity of 106 a discrete random variable. a continuous random variable, or not a randomvariable? A. It is a diso'ete random variable. E. It is a continuous random variable. C. It is not a random variable o Is the gender of college students a discrete random variable. a continuous mndom variable. or not a random variable? A. ll is a discrete random variable. B. ft is a continuous random variable. C. it is not a random variable. d. Isthe number oftextboolc authors nov.r sitting at a computera discrete random variable. a continuous random variable. or not a random variable? A. It is a continuous random variable. B. It is a discrete random variable. C. It is not a random variable. e. Is the nu mberof bald eagles in a country a discrete random variable. a continuous random variable. or not a random variable?A. It is a continuous random variable. B. It is a discrete random variable. (1 it is not a random variable. f. Is the exact time ittalces to evaluate 2? plus T2 a discrete randomvariable. a continuous random variable. or not a random variable? A. It is a discrete random variable. EL it is a continuous random variable. C. it is not a random variable. Click to select your