Your result: Non-Performance Does not identify IV, DV, and Identifies IV and DV, writing the Identies IV and DV: writing the hypothesis, or identifies IV and correct hypothesis represented correct hypothesis represented DV, with more than two errors. by symbols, and makes decision by symbols, and makes decision about the null hypothesis giving about the null hypothesis giving justification with two errors, or is justification with one error. missing justification. Faculty Comments: Distinguished Identifies IV and DV, writing the correct hypothesis represented by symbols, and makes decision about the null hypothesis giving justification with no errors. Thanks for your work here. Alternative hypotheses can be either directional or non directional. The criteria for this problem ask for a directional hypothesis. To improve, be sure to provide a directional hypothesis. In addition, an assessment of the analysis to make a decision about the null hypothesis requires that we compare the significance value to the selected alpha level. In this case, the alpha level is .05. To improve here, reassess the SPSS output and provide an accurate assessment of the decision about the null, using this output. Be sure to provide the APA formatted results for with your response. Please respond to this question using the data and scenario presented in problem set 3.8 Hypothesis, Effect Size, and Power Problem Set 3.1: Sampling Distribution of the Mean Exercise Criterion: Interpret population mean and variance. Instructions: Read the information below and answer the questions. Suppose a researcher wants to leam more about the mean attention span of individuals in some hypothetical population. The researcher cites that the attention span (the time in minutes attending to some task) in this population is normally distributed with the following characteristics: 20 + 36 (Ato"). Based on the parameters given in this example, answer the following questions: 1. What is the population mean ()? 20 2. What is the population variance ( ) ? 6*2 = 36 3. Sketch the distribution of this population. Make sure you draw the shape of the distribution and label the mean plus and minus three standard deviations. N 20 mean 30