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Question: Aron and colleagues (2005) found a correlation between intense romantic love [as assessed by the Passionate Love Scale (PLS)] and activation in a specific region of the brain [as assessed by functional magnetic resonance imaging (fMRI)]. The PLS (Hatfield & Sprecher, 1986) assessed the intensity of romantic love by asking people in romantic relationships to respond to a series of questions, such as "I want ______ physically, emotionally, and mentally" and "Sometimes I can't control my thoughts; they are obsessively on ______," replacing the blanks with the name of their partner.
a. How might we examine the reliability of this measure using test-retest reliability techniques? Be specific and explain the role of correlation.
b. Would test-retest reliability be appropriate for this measure? That is, is there likely to be a practice effect? Explain.
c. How could we examine the reliability of this measure using coefficient alpha? Be specific and explain the role of correlation.
d. Coefficient alpha in this study was 0.81. Based on coefficient alpha, was the use of this scale in this study warranted? Explain.
A sample of employees at a large chemical plant was asked to indicate a preference for one of three pension plans. The results are given in the following table.
1. Suppose Subway has carried out the study, using the sample size determined in that exer- cise, and 27.5% of the franchisees say they are pleased with their relationship with Subway. Construct and interpret the 95% confidence interval for the po..
a nursing school wants to estimate the true mean annual income of its alumni. it randomly samples 120 of its alumni.
If we are hashing n keys into a hash table with k locations, what is the probability that every location gets at least one key?
What is the probability that a randomly selected respondent plans to increase use of social media - What is the probability that both cards are heartshearts?
Provide the Null and Alternative Hypotheses testing statements for the following statement: There are only 24 hours in a day. What statistical tool would you now utilize to improve your business? Explain the Chi-Square Non-Parametric Testing Concept.
Compare the two sources of ads using a t test. Be sure to state your null and alternative hypotheses, the test statistic with degrees of freedom, the P-value, and your conclusion.
To test if the mean amount of time spent per week watching sports on television by all adult men is different from 9.5 hours.
The sample results are given below. At the 0.10 significance level, test the claim that response and major are independent.
Explain what you know about hypothesis and hypothesis testing. Describe the five-step hypothesis-testing procedure? Discuss the concepts of Type I and Type II Errors?
If 40% of all U.S. drivers are observed traveling at 65 mph or more, what is the mean μ? - If 25% of all U.S. drivers are observed traveling at 50 mph or less, what is the mean μ?
a manufacturer of automobile purchases machine bolts from a supplier who claims that no more than 5 of suppliers bolts
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