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PSYC 1010 Latest Update Questions and 100% Verified Correct Answers Guaranteed A+
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PSYC 1010 Latest Update Questions and 100% Verified Correct Answers Guaranteed A+
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PSYC 1010 Latest Update 2024 -2025 Questions and 100% Verified Correct Answers Guaranteed A+ A group of 1000 individuals were asked how many minutes per day people spent using the internet. The responses varied between 51 minutes and 534 minutes. If you used the technique shown in class, what would be true of your frequency distribution? - CORRECT ANSWER: The interval size would be 50 A researcher had a standardized test of Scholastic Aptitude. In the population, scores on this test are normally distributed with a mean of 500 and a standard deviation of 50. There is a 60% probability that the sample mean for a sample of 100 will be over (that is more than) ____ on this test. - CORRECT ANSWER: None of the above A researcher was carrying out a study looking at the correlation between the number of hours of sleep per night and GPA. What kind of graph should be used here to show the relationship between the two variables? - CORRECT ANSWER: A scatterplot A sample of 500 students had debt ranging between $146 and $10,586. You have been asked to make a professional looking frequency distribution from this debt data. Using the technique taught in this class, what would be true of your frequency distribution ? (Hint: Sept 22 lecture video.) - CORRECT ANSWER: The lowest apparent limit on the lowest interval would be 0 and there would be 11 categories An exam has a mean of 50 and a SD of 10 and the scores on the exam are normally distributed. What percentage of people have scores of less than 45 on this exam? - CORRECT ANSWER: 30.85% An exam was given that had a mean of 150 and a standard deviation of 30. Martine received a score of 129 on that exam. The professor wanted to scale the grades so that the mean for the exam would be 65 and it would have a standard deviation of 15. What would Martine's mark be on this scaled exam? - CORRECT ANSWER: 54.50 At the Olympics, figure skaters are given Gold, Silver, and Bronze medals to indicate 1st, 2nd, and 3rd place. This is an example of - CORRECT ANSWER: ordinal scale measurement How do you calculate proportion frequency in a simple frequency distribution? (Note: f is the abbreviation for frequency). - CORRECT ANSWER: f/n In a grade 1 class there were 50 girls and 50 boys. Which of the following is constant in this group? - CORRECT ANSWER: Grade In a normally distributed population, 95% of the population has z scores between ___ and ___. (These two z scores are equally distant from the mean, one above the mean and one below). - CORRECT ANSWER: +1.96 and -1.96 In a study on frustration, a researcher had participants rate their feelings on a 1 -9 scale, where 1 was not at all angry and 9 was extremely angry. From what you learned in class, what scale of measure is this? - CORRECT ANSWER: interval In her study, Trish randomly assigned students to have either 3 hours or 8 hours of sleep the night before a spelling quiz and she measured the mark out of 10 on the quiz. Trish predicted that participants who had 8 hours a sleep would have a higher averag e quiz score than those with only 3 hours of sleep. This last statement (the prediction) is an example of - CORRECT ANSWER: An experimental hypothesis In the population, the amount of time that 20 year old adults can balance on one foot is normally distributed with a mean of 45 seconds and a standard deviation of 20 seconds. What is the probability of randomly choosing a single 20 -year old adult who can stand on one foot for more than 80 seconds? - CORRECT ANSWER: 4.01% Marcie is a young child and in terms of height her Z score is -1.5 as compared to children of her age. For children of her age, the average height is 120 centimeters with a standard deviation of 10. What is Marcie's height? - CORRECT ANSWER: 105 centimetersThe benefits of buying summaries with Stuvia:
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