Which of the following represents threshold potential?

Which of the following represents a hyperpolarized membrane potential?

Using the compute procedure, create a new variable representing the MEAN of variables fr1 and f2. Call the new variable avgfr (for average faculty rating). Create a histogram for the variable.  Upload your output file.

Use the data set highschool.sav to answer this question. We are interested in whether GPA increases or decreases as students progress through high school. In order to examine this question, we obtain GPAs from 24 children at age 15 (GPA15) and then the same children again at age 17 (GPA17). Do students’ GPAs change significantly between the ages of 15 and 17?  Perform a paired-samples t-test to evaluate this question. Upload your output file showing this test.

Use the data set smoker.sav to answer the final three questions. A researcher is interested in whether regularly smoking marijuana would affect digit-span recall, which is a measure of short-term memory. The researcher first found two groups of participants (‘smoke_group’): (1) nonsmokers and (2) smokers. Each group was given a digit-span test, and the number of digits recalled is listed in the ‘digit_span’ column in the Data View. A higher digit-span score implies a better short-term memory.

If you are using a 7-point Likert scale with 28 items, and based on your calculation, the Cronbach’s alpha for the scale is  0.55, you can infer that

Maurice is conducting a study on customer satisfaction for a firm. The study includes a survey that asks respondents to rate the firm on a scale of 1 to 10 across 20 different criteria. During the coding process, Maurice notices that some respondents have provided the same value for each of the criteria. These respondents are most likely to be considered

To analyze how gender (1 = female, 0= male) influences product attitude, measured on a 7-point Likert scale, which data analysis method should you use?

Depolarization occurs when the membrane potential decreases (becomes more negative).

When to run a regression?