PSYC 354 Review Test Exam 4

Published on October 2017 | Categories: Business/Law | Downloads: 102 | Comments: 0 | Views: 765
Download PDF   Embed   Report

PSYC 354 Review Test Exam 4 Click Link Below To Buy: http://hwcampus.com/shop/psyc-354-review-test-exam-4/ Attempt Score 97.5 points scored Instructions Time limit: 1 hour and 30 minutes 40 multiple¬choice questions Open¬book/open¬notes Results Displayed Submitted Answers Question 2.5 out of 2.5 points 1 Imagine that the confidence interval around a group's mean is [980, 1160], what is the mean? Question 2.5 out of 2.5 points 2 A negatively skewed distribution would most likely violate which assumption? Question 0 out of 2.5 points 3 A researcher conducts a single¬sample t test and finds statistical significance at the 0.01 level. Question 4 The formula “ ” is used to represent the: Question 5 Cohen's d is one measure of: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 2.5 out of 2.5 points 6 The single¬sample t test compares a sample mean to a population mean when: Question 2.5 out of 2.5 points do we use to compare a sample to the population? Question 2.5 out of 2.5 points 8 Why are effect sizes rather than test statistics used when comparing study results? Question 9 What falls within the 95% confidence interval? Question 2.5 out of 2.5 points 10 We calculate a statistical power and find that it is 0.93. This means that if the null hypothesis is , we have a % chance of rejecting the null hypothesis. Question 2.5 out of 2.5 points 11 A confidence interval is a(n. that includes the population mean after repeatedly sampling. Question 12 One of the roles of the researcher performing a meta¬analysis is to: 2.5 out of 2.5 points Question 2.5 out of 2.5 points 13 The statement “The findings based on a sample of 1000 participants were statistically significant, providing evidence for our hypothesis” would be strengthened by: Question 14 We can increase statistical power with each of the following except: 2.5 out of 2.5 points Question 2.5 out of 2.5 points 15 Imagine that a study of memory and aging finds that younger participants correctly recall 55% of studied words, older participants correctly recall 42% of studied words, and the size of this effect is Cohen's d = 0.49. This effect size indicates that the memory performance of: Question 16 That a results is statistically significant does not mean that it is Question 17 When we report that something is statistically significant, it means that 2.5 out of 2.5 points Question 18 Increasing sample size: 2.5 out of 2.5 points Question 2.5 out of 2.5 points 19 Many companies that manufacture light bulbs advertise their 60¬watt bulbs as having an average life of 1000 hours. A cynical consumer bought 30 bulbs and burned them until they failed. He found that they burned for an average of M = 1233, with a standard deviation of s = 232.06. What statistical test would this consumer use to determine whether the average burn time of light bulbs differs significantly from that advertised? Question 2.5 out of 2.5 points 20 The correct formula for effect size using Cohen's d for a single¬sample t test is: Question 21 In statistics, what does “homogeneous” mean? Question 2.5 out of 2.5 points 2.5 out of 2.5 points 22 According to Cohen's convention, a value of is a small effect size. Question 23 Meta¬analysis involves: 2.5 out of 2.5 points Question 24 The practical use of statistical power is that it informs you the researcher: 2.5 out of 2.5 points Question 25 Alpha refers to: Question 26 The larger the effect size, the: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 2.5 out of 2.5 points 27 Candidate #2 received 32% of the votes and candidate #3 received 14% of the votes, with a margin of error of 6%. What does this information tell us about the popularity of these candidates? Question 28 Statistical convention for the minimal acceptable power is: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 29 The numerator (top portion) of the ratio for calculating all the t statistics contains: Question 30 Identify the formula for the single¬sample t test. 2.5 out of 2.5 points Question 2.5 out of 2.5 points 31 The second step in conducting the single¬sample t test involves Question 2.5 out of 2.5 points 32 Which of the following reports of statistical results are in appropriate APA format? Question 2.5 out of 2.5 points 33 According to Cohen's convention, a value of is a large effect size. Question 34 Effect size assesses the degree to which two: Question 35 The formula for the degrees of freedom for the single¬sample t test is: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 2.5 out of 2.5 points 36 Using the following information, convert the z score to a raw score: z = ¬2.3, mu = 15.5, sigma = 4. Question 37 In a distribution of Z scores, the mean is always Question 38 A population is normally distributed with μ = 30, σ = 2.5 out of 2.5 points 2.5 out of 2.5 points 10, and our sample N = 25. What are the mean and standard error of the distribution of Question 39 A population is normally distributed with μ = 50, σ = 2.5 out of 2.5 points Question 2.5 out of 2.5 points 40 If the mean of a test is 13 and its standard deviation is 3, the Z score for a person with a raw score of 7 is

Comments

Content

PSYC 354 Review Test Exam 4 Click Link Below To Buy: http://hwcampus.com/shop/psyc-354-review-test-exam-4/ Attempt Score 97.5 points scored Instructions Time limit: 1 hour and 30 minutes 40 multiple¬choice questions Open¬book/open¬notes Results Displayed Submitted Answers Question 2.5 out of 2.5 points 1 Imagine that the confidence interval around a group's mean is [980, 1160], what is the mean? Question 2.5 out of 2.5 points 2 A negatively skewed distribution would most likely violate which assumption? Question 0 out of 2.5 points 3 A researcher conducts a single¬sample t test and finds statistical significance at the 0.01 level. Question 4 The formula “ ” is used to represent the: Question 5 Cohen's d is one measure of: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 2.5 out of 2.5 points 6 The single¬sample t test compares a sample mean to a population mean when: Question 2.5 out of 2.5 points do we use to compare a sample to the population? Question 2.5 out of 2.5 points 8 Why are effect sizes rather than test statistics used when comparing study results? Question 9 What falls within the 95% confidence interval? Question 2.5 out of 2.5 points 10 We calculate a statistical power and find that it is 0.93. This means that if the null hypothesis is , we have a % chance of rejecting the null hypothesis. Question 2.5 out of 2.5 points 11 A confidence interval is a(n. that includes the population mean after repeatedly sampling. Question 12 One of the roles of the researcher performing a meta¬analysis is to: 2.5 out of 2.5 points Question 2.5 out of 2.5 points 13 The statement “The findings based on a sample of 1000 participants were statistically significant, providing evidence for our hypothesis” would be strengthened by: Question 14 We can increase statistical power with each of the following except: 2.5 out of 2.5 points Question 2.5 out of 2.5 points 15 Imagine that a study of memory and aging finds that younger participants correctly recall 55% of studied words, older participants correctly recall 42% of studied words, and the size of this effect is Cohen's d = 0.49. This effect size indicates that the memory performance of: Question 16 That a results is statistically significant does not mean that it is Question 17 When we report that something is statistically significant, it means that 2.5 out of 2.5 points Question 18 Increasing sample size: 2.5 out of 2.5 points Question 2.5 out of 2.5 points 19 Many companies that manufacture light bulbs advertise their 60¬watt bulbs as having an average life of 1000 hours. A cynical consumer bought 30 bulbs and burned them until they failed. He found that they burned for an average of M = 1233, with a standard deviation of s = 232.06. What statistical test would this consumer use to determine whether the average burn time of light bulbs differs significantly from that advertised? Question 2.5 out of 2.5 points 20 The correct formula for effect size using Cohen's d for a single¬sample t test is: Question 21 In statistics, what does “homogeneous” mean? Question 2.5 out of 2.5 points 2.5 out of 2.5 points 22 According to Cohen's convention, a value of is a small effect size. Question 23 Meta¬analysis involves: 2.5 out of 2.5 points Question 24 The practical use of statistical power is that it informs you the researcher: 2.5 out of 2.5 points Question 25 Alpha refers to: Question 26 The larger the effect size, the: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 2.5 out of 2.5 points 27 Candidate #2 received 32% of the votes and candidate #3 received 14% of the votes, with a margin of error of 6%. What does this information tell us about the popularity of these candidates? Question 28 Statistical convention for the minimal acceptable power is: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 29 The numerator (top portion) of the ratio for calculating all the t statistics contains: Question 30 Identify the formula for the single¬sample t test. 2.5 out of 2.5 points Question 2.5 out of 2.5 points 31 The second step in conducting the single¬sample t test involves Question 2.5 out of 2.5 points 32 Which of the following reports of statistical results are in appropriate APA format? Question 2.5 out of 2.5 points 33 According to Cohen's convention, a value of is a large effect size. Question 34 Effect size assesses the degree to which two: Question 35 The formula for the degrees of freedom for the single¬sample t test is: Question 2.5 out of 2.5 points 2.5 out of 2.5 points 2.5 out of 2.5 points 36 Using the following information, convert the z score to a raw score: z = ¬2.3, mu = 15.5, sigma = 4. Question 37 In a distribution of Z scores, the mean is always Question 38 A population is normally distributed with μ = 30, σ = 2.5 out of 2.5 points 2.5 out of 2.5 points 10, and our sample N = 25. What are the mean and standard error of the distribution of Question 39 A population is normally distributed with μ = 50, σ = 2.5 out of 2.5 points Question 2.5 out of 2.5 points 40 If the mean of a test is 13 and its standard deviation is 3, the Z score for a person with a raw score of 7 is

Sponsor Documents

Or use your account on DocShare.tips

Hide

Forgot your password?

Or register your new account on DocShare.tips

Hide

Lost your password? Please enter your email address. You will receive a link to create a new password.

Back to log-in

Close