Question

We have a sample of 5090 participants, who self-reported severity of depressive symptoms in the past...

We have a sample of 5090 participants, who self-reported severity of depressive symptoms in the past 14 days. The scale used to assess depression ranges from 0 to 27, with scores greater than 9 indicating possible major depression. The sample mean is 3.33, with standard deviation equals to 4.66. A total of 477 participants have scores greater than 9. Do you think it is representative of the National Rates?

Men are 2493, and have a mean score of 2.92 (standard deviation=4.82); Women are 2597, and have a mean score of 3.72 (standard deviation=4.47). Are the mean scores statistically different?

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

Homework Answers

Answer #1


Let me know in the comment section if anything is not clear. I will reply ASAP!
If you liked the answer, please give an upvote. This will be quite encouraging for me.Thank-you!

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
One of the most widely administered psychological assessments is the Rosenberg Self-Esteem Scale (1965), a 10-item...
One of the most widely administered psychological assessments is the Rosenberg Self-Esteem Scale (1965), a 10-item scale that assesses global self-worth by measuring both positive and negative feelings about the self. Scores on this standardized self-esteem questionnaire range from 10-100, with higher scores indicating higher levels of self-esteem. For the general population of American teenagers, the average score is 50 points (SD = 15 points). Childhood participation in organizations such as sports, cultural groups, religious groups, and school clubs may...
Four students reported their study time and test score from a statistics course and their data...
Four students reported their study time and test score from a statistics course and their data have been converted into Z scores in the table below. What is Pearson's correlation coefficient from this data set? Group of answer choices a.)-.50 b.)-.25 c.).75 d.)-1.00 In what situation would a researcher use a  t-test used instead of a Z-test? Group of answer choices a.)When there is only one sample. b.)When the population standard deviation is unknown. c.)When the sample size is smaller than...
1. A social researcher wants to test the hypothesis that people who drink a lot while...
1. A social researcher wants to test the hypothesis that people who drink a lot while bowling have higher scores than people who do not drink while they bowl. The researcher studies 50 drinking bowlers and 50 non-drinking bowlers. The average score for drinking bowlers was 142 with a standard deviation of 7.45. The average score for non-drinking bowlers was 134 with a standard deviation of 6.81. In words: What are your conclusions about the null hypothesis? 2. A social...
A) A polling organization reported data from a survey of 2000 randomly selected Canadians who carry...
A) A polling organization reported data from a survey of 2000 randomly selected Canadians who carry debit cards. Participants in this survey were asked what they considered the minimum purchase amount for which it would be acceptable to use a debit card. Suppose that the sample mean and standard deviation were $9.17 and $7.50, respectively. (These values are consistent with a histogram of the sample data that appears in the report.) Do these data provide convincing evidence that the mean...
With increases in obesity rates over the past several decades, health care providers have become concerned...
With increases in obesity rates over the past several decades, health care providers have become concerned about the effects of obesity on health. As a health psychologist, you are interested in people’s perceptions and responses to food as this might influence obesity. You are curious if people that are impulsive or have difficult with impulse control are more likely to be obese and if they perceive sweet, high calorie foods as being more desirable than the general population. Given this,...
The tails of the normal curve never touch the abscissa because theoretically, any value is possible....
The tails of the normal curve never touch the abscissa because theoretically, any value is possible. it is a line plot. normal data are not continuous. it is not possible to have a value with 0 relative frequency What proportion of values are between 0 and 3 standard deviations from the mean? 0.5 half of 0.50 half of 0.997 less than 3% A negative z-score indicates that the original score was greater than the mean. equal to the standard deviation....
1. ) Suppose a researcher is interested in the effectiveness of a new drug that is...
1. ) Suppose a researcher is interested in the effectiveness of a new drug that is intended to naturally increase hours of sleep for elderly patients experiencing insomnia above 5 hours. Suppose he collects information from a group of 64 patients, and calculates a sample mean of 6.4 hours of sleep and a standard deviation of s=0.8.   Write out your null and alternative hypotheses. Carry out the appropriate statistical test to determine if the new treatment is effective (One sided)?...
S-adenosyl methionine (SAM-e) is a naturally occurring compound in human cells that is thought to have...
S-adenosyl methionine (SAM-e) is a naturally occurring compound in human cells that is thought to have an effect on depression symptoms. Suppose that a researcher is interested in testing SAM-e on patients who are struggling with cancer. She obtains a sample of n = 25 patients and asks each person to take the suggested dosage each day for 4 weeks. At the end of the 4-week period, each individual takes the Beck Depression Inventory (BDI), which is a 21-item, multiple-choice...
S-adenosyl methionine (SAM-e) is a naturally occurring compound in human cells that is thought to have...
S-adenosyl methionine (SAM-e) is a naturally occurring compound in human cells that is thought to have an effect on depression symptoms. Suppose that a researcher is interested in testing SAM-e on patients who are struggling with Parkinson’s. He obtains a sample of n = 20 patients and asks each person to take the suggested dosage each day for 4 weeks. At the end of the 4-week period, each individual takes the Beck Depression Inventory (BDI), which is a 21-item, multiple-choice...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT