Question

Jane wants to know if children who grow up as only children develop different personality characteristics...

Jane wants to know if children who grow up as only children develop different personality characteristics than those who grow up in larger families. She recruits a sample of 36 participants who are only children and gives them a standardized personality test. For the general population, scores on the test form a normal distribution with a mean of 50 and a standard deviation of 15. Jane’s sample has an average score of 58. Can Jane conclude that, on average, only children have significantly different personality when compared to the general population? In the space below, type in the answers to the following questions.

1. Which statistical test would you use to solve this problem?

2. State the null and alternative hypotheses in words.

3. Locate the critical value that defines the critical region.

4. Calculate your statistic.

5. Make a decision with respect to the null hypothesis.

6. Write a concluding sentence in everyday language.

7. Calculate and evaluate Cohen’s d.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Oishi and Shigehiro (2010) report that people who move from home to home frequently as children...
Oishi and Shigehiro (2010) report that people who move from home to home frequently as children tend to have lower than average well-being as adults. To further examine this relationship, a psychologist obtains a sample of 12 young adults who each experienced 5 or more different homes before they were 16 years old. These participants were given a standardized questionnaire for which the general population has an average score of 40. For this sample, the average well-being score was 37...
There is some evidence indicating that REM sleep, associated with dreaming, may also play a role...
There is some evidence indicating that REM sleep, associated with dreaming, may also play a role in learning and memory processing. For example, Smith and Lapp (1991) found increased REM activity for college students during exam periods. Suppose that REM activity for a sample of 16 students during the final exam period produced an average score of M = 143. Regular REM activity for college students averages µ = 110 with a standard deviation of σ  = 50. Do these data...
Research examining the effects of preschool childcare has found that children who spent time in day...
Research examining the effects of preschool childcare has found that children who spent time in day care, especially high-quality day care, perform better on math and language tests than children who stay home with their mothers (Broberg, Wessels, Lamb, & Hwang, 1997). In a typical study, a researcher obtains a sample of n = 10 children who attended day care before starting school. The children are given a standardized math test for which the population mean is u = 50....
For each problem students will write out all steps of hypothesis testing including populations, hypotheses, cutoff...
For each problem students will write out all steps of hypothesis testing including populations, hypotheses, cutoff scores, and all relevant calculations. A psychologist has developed a standardized test for measuring the vocabulary skills of 4-year-old children. The scores on the test form a normal distribution with μ = 60 and σ = 10. A researcher would like to use this test to investigate the idea that children who grow up with no siblings develop vocabulary skills at a different rate...
For each problem students will write out all steps of hypothesis testing including populations, hypotheses, cutoff...
For each problem students will write out all steps of hypothesis testing including populations, hypotheses, cutoff scores, and all relevant calculations. A psychologist has developed a standardized test for measuring the vocabulary skills of 4-year-old children. The scores on the test form a normal distribution with μ = 60 and σ = 10. A researcher would like to use this test to investigate the idea that children who grow up with no siblings develop vocabulary skills at a different rate...
A researcher wanted to learn whether emotional stability of home schooled children is different from the...
A researcher wanted to learn whether emotional stability of home schooled children is different from the emotionality of children in general. The US government reports that all children (age 10) had an average score 30 on the Emotional Stability Test with a higher score meaning that an individual is more stable. The following scores were gathered from 9 randomly selected home schooled children (age 10): 28, 25, 25, 22, 30, 27, 27, 32, 27. Use a single-sample t-test to determine...
Oishi and Shigehiro (2010) report that people who move from home to home frequently as children...
Oishi and Shigehiro (2010) report that people who move from home to home frequently as children tend to lower than average levels of well being as adults. To further examine the relationships, a psychologist obtains a sample of n=12 young adults who each experienced 5 or more different homes before they were 16 years old. These participants were given a standardized well-being questionnaire for which the general population has an average score of µ= 40. The well-being scores for this...
Childhood participation in sports, cultural groups and youth groups appears to be related to improved self-esteem...
Childhood participation in sports, cultural groups and youth groups appears to be related to improved self-esteem for adolescents (McGee et al., 2006). A sample of n =100 adolescents with a history of group participation is given a standardized self-esteem questionnaire. For the general population of adolescents, scores on this questionnaire form a normal distribution with a mean of μ = 40 and a standard deviation of σ = 12. The sample of group participation adolescents had an average of M...
Below are depression scores for women who report experiencing intimate partner violence. These scores were taken...
Below are depression scores for women who report experiencing intimate partner violence. These scores were taken from a random sample of 10 women. In the general population, depression scores are normally distributed with a mean (μ) of 31 and a standard deviation (σ) of 2. You hypothesize that this sample is not representative of the general population. Specifically, you hypothesize that these women form a distinct sub-population, with specifically HIGHER depression, relative to the general population. That is, if they...
Questions 21-28: Does consuming sports energy drinks improve endurance? For the general population, scores on an...
Questions 21-28: Does consuming sports energy drinks improve endurance? For the general population, scores on an endurance task have a mean of 50 with a standard deviation of 12. A sample of 50 students is given energy drinks and their mean performance on the endurance task is 53. Use an alpha level of 0.01 21. Using symbols state the null hypothesis 22. Using symbols state the alternative hypothesis 23. Is this a one-tailed or two tailed test? 24. Where would...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT