A behavioral psychologist wanted to know if making a public commitment to lose weight will make...

A behavioral psychologist wanted to know if making a public commitment to lose weight will make a difference in how much weight is actually lost. He obtained 14 volunteers who wanted to lose weight and randomly assigned them to one of two groups. The “commitment” group met together and each participant stood and announced an intent to lose weight and signed a pledge to adhere to the diet and exercise regimen. The “control” was placed on the same diet and exercise regimen, but did not stand to announce their intent to lose weight and did not sign a pledge to adhere to the regimen. The commitment group participants lost 13, 11, 13, 12, 10, 9,and 8 pounds; the control group participants lost 10, 6, 7, 5, 9, 6, and 8 pounds. Did making a commitment to adhere to the diet and exercise regimen make a significant difference in weight loss?

What is the IV? How many levels? What is the DV? Construct a frequency distribution with that data above for each group

Solutions

Expert Solution

orchestra answered 2 years ago

Next > < Previous

Related Solutions

A behavioral psychologist wanted to know if making a public commitment to lose weight will make...

A physiological psychologist wanted to know if there is a gender difference in consuming a sweet...

A physiological psychologist wanted to know if there is a gender difference in consuming a sweet taste in rats. Ten male and ten female rats were allowed to lick on a tube of saccharin-sweetened water for ten minutes. The number of licks were 12, 11, 8, 9, 14, 10, 8, 9, 11, and 12 for the female rats and 6,7, 9, 5, 7, 9, 7, 8, 9, and 10 for the male rats. Is there a significant difference between males...

A personality psychologist wanted to know if men and women differ in their sympathy and compassion...

A personality psychologist wanted to know if men and women differ in their sympathy and compassion expressed to others. She gave a personality test to randomly selected men and women. One component of the test measured empathy, with higher scores indicating more empathy. The data are shown in the spreadsheet. Carry out a t-test on H0: μ M = μ W (population means for Men and Women are the same) vs. Ha: μ M ≠ μ W (population means for...

A psychologist wanted to know if students in her class were more likely to cheat if...

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean course-testings score on the previous three tests. She then asked them to rate how likely they were to cheat on an course-testings if the opportunity presented itself with very limited chance for consequences. The students rated their desire to cheat on a scale ranging...

A psychologist wanted to know if students in her class were more likely to cheat if...

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean course-testings score on the previous three tests. She then asked them to rate how likely they were to cheat on a course-testings if the opportunity presented itself with very limited chance for consequences. The students rated their desire to cheat on a scale ranging...

A psychologist wanted to know if students in her class were more likely to cheat if...

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean course-testings score on the previous three tests. She then asked them to rate how likely they were to cheat on a course-testings if the opportunity presented itself with very limited chance for consequences. The students rated their desire to cheat on a scale ranging...

A psychologist wanted to know if students in her class were more likely to cheat if...

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean course score on the previous three course-testings. She then asked them to rate how likely they were to cheat on an course-testings if the opportunity presented itself with very limited chance for consequences. The students rated their desire to cheat on a scale ranging...

A psychologist wanted to know if students in her class were more likely to cheat if...

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean course-testings score on the previous three tests. She then asked them to rate how likely they were to cheat on a course-testings if the opportunity presented itself with very limited chance for consequences. The students rated their desire to cheat on a scale ranging...

A developmental psychologist wanted to know whether watching videos aimed at increasing the cognitive abilities of...

A developmental psychologist wanted to know whether watching videos aimed at increasing the cognitive abilities of toddlers (e.g., Baby Einstein) really helped. He recruited 30 families from the local community with a child from 18 months to 24 months in the home. Parents in the experimental group were instructed to have their toddler watch the video for 10 minutes per day for 4 weeks. Parents in the control condition spent the same amount of time playing with their toddlers. The psychologist was also interested...

A weight-lifting coach wanted to know whether weight-lifters can change their strength by taking a certain...

A weight-lifting coach wanted to know whether weight-lifters can change their strength by taking a certain supplement. To answer this question, the coach randomly selected 8 athletes and gave them a strength test using a bench press. Thirty days later, after regular training using the supplement, they were tested again. The results were listed below. A test was conducted to determine whether weight-lifters can change their strength by taking a certain supplement. Assume the populations are normally distributed. Athlete 1...

Subjects