II- fil- .L-J 5 Course Materials Lecture Recordings & Notes Practice Problems Weekly Assignments, Readings Midterm Exam Week 1 - Class Oven/iew & Data Basics Week 2 a 3 , Data Types, Graphs, and Descriptive Stats Week 4 , Contingency Tables &Quantifying Disease Weeks 578 . Diagnostic Testing, Sampling, and Probability Week 9+ - Sampling Distributions, Confidence, and Hypothesis Testing Discussion Board Email My Grades Resources and Help Student Counseling, Health and Wellness Resources Academic Resources Library Resources Course Tools Help 9 bbhostedcu ny.edu :5 Question Completion Status: Take Test: Normal Di... QUESTION 1 Awarding to the Empirical Rule, of all data fall between the mean and 1 SD from the mean. 0 a. 99.7% 0 b. 50% O c. 68% 0 d. 95% QUESTION 2 2 scores measure relative position from the mean, based on whioh of following? '7') a. Quartiles O b. Standard Deviations '7\Resources and Help Student Counseling, Health and Wellness Resources Academic Resources Library Resources Course Tools Help U E bbhosted,cuny.edu C v Question Completion Status: QUESTION 4 Given that a population is normally distributed with a mean of 100 and a standard deviation of 8, determine the 2 score of X = 88 h a, 75.5 A13.89 hC.-1.5 "id.+1.5 1 points Save Answer QUESTION 5 When working with Z soores, you must subtract your desired value from the mean, and then you divide by the standard deviation. A' True 'A' False QUESTION 6 A2 score of 0 means that the value A ' 'a, Is equal to the mean. A b. Is close to the mean. 'A' c. Is to the right of the mean. A d. Is far from the mean. 1 points Save Answer 1 points Save Answer QUESTION 7 In the standard normal distribution, the mean and standard deviation of the distribution are A a, 0, 1 'db.1,0 1 polnts Save Answer Save All Answers Save and Submit U E bbhosted,cuny.edu C v Question Completion Status: QUESTION 7 In the standard normal distribution, the mean and standard deviation of the distribution are A a, 0, 1 A b. 1, 0 A c. 1, 1 A d. 0, 0 QUESTION 8 Ascientist wants to test a new training program designed to increase muscle size. Her experiment will involve taking muscle thickness measurements before and after a new exercise program, and then calculating the difference (post pre). Based on experience, she expects that the differences will be normally distributed with an SD of 1mm. What is the approximate probability that a single observation from the distribution of change scores falls in between -2mm and 2mm? (Hint: Mean is 0) A a,ea% A [3.25% A c. 110% A d.95% QUESTION 9 Using the distribution suggested above, what is the probability that a change score indicates a loss of muscle thickness of 2 or more? A a, 84% A b. 16% A c. 2.5% A d. 5% QUESTION 10 1 points Save Answer 1 points Save Answer 1 points Save Answer 1 1noints r SaveAnswer Save All Answers Save and Submit I) E bbhosted,cuny.edu C v Question Completion Status: QUESTION 10 Now suppose that the scientist in runs the experiment based on a sample size of n=9 subjects. What would you except the average dierence to be? A a, -2mm A b. 2mm A c. 0mm A d.3mm QUESTION 1 1 According to the Central Limit Theorem, sample statistics, like sample means, tend to approximate a population parameter. \"\\ True '\" False QUESTION 12 Knowing that standard error is calculated using the formula SE=SDNn, decreasing the sample size should A Change (positive or negative) the standard error A Decrease standard error A Increase standard error A Not affect the standard error QUESTION 13 Given a sample size of n = 10,000, practically, a proportion calculated from this sample will equal the population proportion. 1 points Save Answer 1 polnts Save Answer 1 points Save Answer 1 points Save Answer Save All Answers Save and Submit bbhosted,cuny.edu C Take Test: Normal Dim 7777 C ' liti' v Question Completion Status: QUESTION 13 Given a sample size of n = 10,000, practically. a proportion calculated from this sample will equal the population proportion. A True A False QUESTION 14 Asample standard deviation (SD) of 15 was observed in a sample of size n=100. Which of the following is the standard error of the mean (SEM) based on this sample? A 0.5 ,s 75 \" 10,0 \" 1.5 QUESTION 15 A population of cardiac patients has a mean systolic blood pressure of 140 mmHg, with a standard deviation of 15 mmHg. If you sampled 25 people. the standard error (SE) would be 4 mmHg. A True A False QUESTION 16 It is well known that the distribution of household incomes in Manhattan is not "bell-shaped". It tends to skew to the right due to the presence of extremely wealthy households Given a sample of n = 1,000 households, it is likely that the distribution of a sample mean income will be A Normally Distributed A Left Skewed 7 Right Skewed 1 points Save Answer 1 points Save Answer 1 points Save Answer 1 points Save Answer Save All Answers Save and Submit U E bbhosted,cuny.edu C v Question Completion Status: QUESTION 16 It is well known that the distribution of household incomes in Manhattan is not "bell-shaped". It tends to skew to the right due to the presenoe of extremely wealthy households Given a sample of n = 1,000 households, it is likely that the distribution of a sample mean income will be A Normally Distributed A Left skewed A Right skewed A Flat QUESTION 17 The smndard error of the mean is best dened as A Z score ofa mean A Error that occurs when some mean falls in a critical region A The sum of squares of a sample divided by n-1 A Standard deviation of a sampling distribution, QUESTION 18 The average human heart rate at a clinic is approximately 75 beats per minute (bpm). If a sample of patients were selected and their heart rates were taken, it would be safe to assume that the sample would be close to 75. A True A False 1 points 1 points 1 points Save All Answers Save Answer Save Answer Save