PYC3704 - Psychological Research (2021 - Semester 1 and Semester 2 - Assignment 2 Answers) (With Elaborations)

PYC3704 - Psychological Research (2021 - Semester 1 and Semester 2 - Assignment 2 Answers) PYC3704 - Psychological Research (2021 - Semester 1 and Semester 2 - Assignment 2 Answers) (With Elaborations) Why do we calculate a test statistic? 1. To determine whether or not we can accept that the null hypothesis is true 2. To determine how far the observed measurements deviate from what we may expect by chance 3. To get a measurement by which we can calculate the level of significance 4. To determine whether or not we can reject the alternative hypothesis When applying a statistical test, the probability of a Type I error is equal to the probability of - - - - -. 1. rejecting H0 in error 2. rejecting H1 in error 3. accepting H0 in error 4. not accepting H1 when in fact you should A researcher wants to test the hypothesis that the mean depression score on a depression scale for patients diagnosed with clinical depression is greater than 120. The statistical hypothesis to be tested is: H0:  = 120 H1:  > 120 She uses a random sample of n=64 drawn from the population of diagnosed patients and finds that ¯x = 127 and s = 24. Which of the values below is the closest to the correct value of s¯x? 1. 0.37 2. 3.0 3. 0.61 4. s¯x cannot be calculated from the information that was provided Suppose the alternative hypothesis states that µ > 60. The researcher should test H0 against H1 if the - - - - -. 1. sample mean is larger than 60 2. sample mean is smaller than 60 3. sample mean differs from 60, irrespective of the direction of the difference 4. p-value is smaller than the level of significance