Your friend creates a test for creativity. She reports that it has a reliability of +.20 and a validity of +.60. What do you tell her about her findings? You are too creative with your statistics because you can't have a test that is more valid than it is reliable. You have reasonable validity, but you need to revise the test to get it to be more reliable. O You must have a "restriction of range" that has lowered the reliability score. Wait-we don't examine correlation coefficients in building useful tests.

Your friend creates a test for creativity. She reports that it has a reliability of +.20 and a validity of +.60. What do you tell her about her findings? You are too creative with your statistics because you can't have a test that is more valid than it is reliable. You have reasonable validity, but you need to revise the test to get it to be more reliable. O You must have a "restriction of range" that has lowered the reliability score. Wait-we don't examine correlation coefficients in building useful tests.

Name: Your friend creates a test for creativity. She reports that it has a
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Description: Your friend creates a test for creativity. She reports that it has a reliability of +.20 and a validity of +.60. What do you tell her about herfindings?You are too creative with your statistics because you can't have a test that is more valid than i

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Consider a medical test with a false positive rate of 1% and a false negative rate of 2%. The frequency of the condition in people who take this test is 3% Q4. If this test was given to 100,000 healthy people, how many false diagnoses would there be? Q5. What is the overall percentage of people who test "positive" who are actually negative for the condition? Q6. What is the overall percentage of people who test "negative" who are actually positive for the condition? # wrong diag. = ??? % pos. = ??? % % pos. = ??? %
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A researcher tests whether his students are smarter than the general population. He knows the mean of the population is 100 for the Wechsler Adult Intelligence Scale. He tests the mean of his student’s scores against the mean of the population. What kind of t-test should be used?
Please answer everything, after all they are connected to one another. Thank you.
What stats test should be used to solve the following? A positive psychologist compares whether levels of gratitude in a random sample of n = 50 students at her college (M = 40) differ from the mean of college students across the US (μ = 45). A sports psychologist tested the reaction time of 320 college athletes. She found their average reaction time in a controlled task to be .77 seconds (s = 21). She wondered if the college athletes had faster reactions times than college students on average, who typically reacted in 1.23 seconds. A school psychologist obtained a sample of 120 fourth-grade kids who engaged in remote learning only during the COVID-19 pandemic. She found their average anxiety score to be M = 168. He compared that mean to the average anxiety score of fourth-grade children before the pandemic, which was μ = 144, with a ?=12σ=12. Did the sample of kids engaged in remote learning have a significantly different level of anxiety?
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Last year over 7000 students took an entrance exam at a certain state university. Kareem's score was at the 44th percentile. Lella's score was at the 93rd percentile. (a) Which of the following must be true about Kareem's and Leila's scores? Both Kareem and Leila scored higher than the median. O Both Kareem and Lella scored below than the median. O Leila scored higher than Kareem. O Kareem scored higher than Leila. (b) Which of the following must be true about Kareem's score? O About 44% of the students who took the exam scored lower than Kareem. O Kareem got about 44% of the questions correct. O Kareem's score was in the top half of all scores. O Kareem missed 56 questions. Explanation Check X 3 Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center
Samantha took an exam in her statistics class and received 90 out of 100. Samantha thought that was a good score, but she wanted to know how high her score was in relation to the rest of the class. Her professor said her Z-score was -0.29. How should Samantha interpret her Z-score? a. Samantha’s score is 0.29 points above the class mean.b. Samantha’s score is 29% above than the class mean.c. Samantha’s score is 0.29 standard deviations above the class mean.d. Samantha’s score is 0.29 standard deviations below the class mean.
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