Instructions: Read the scenario and answer the questions below. Round all probabilities and proportions to 4...
Normal Probability Distribution Instructions: Read the scenario and answer the questions below. Round al probablities and proportions to 4 dedimal places The Graduate Record Examination (GRE) is a test required for admission to many U.S. graduate schools. Students' scores on the quantitative portion of the GRE follow a normal distribution with mean 150 and standard deviation 8.8. (Source:www.ets.org). A grad school requires that students score above 160 to be admitted. 1. What proportion of combined GRE scores can be expected...
To FOUR DECIMAL PLACES: Determine the area under the standard normal curve that lies to the left of Z = –1.31 to the right of Z = –2.47 between Z = –2.47 and Z = –1.31 between Z = 1.31 and Z = 2.47 Find the z-scores that separate the middle 84% of the standard normal distribution from the area in the tails. Find z0.18 a. Find the Z-score corresponding to the 72nd percentile. In other words, find the Z-score...
A graduate program wants to determine if first year graduate student GPA,y, Is linearly related to score on the quantitative section of the GRE,x, (Graduate Recored Examinations). Data was collected from 15 randomly selected graduate students. Scores on the quantitative secrion of the GRE ranged from 480 to 720. 1. To determine if the correlation is significant, what rule is used? a. correlation is significant if |r| > critical value. b. correlation is significant if |r| < critical value c....
PLEASE TYPE DO NOT WRITE THANK YOU! The Graduate Record Examination (GRE) is a test required for admission to many US graduate schools. Students’ scores on the quantitative portion of the GRE follow a normal distribution with a mean of 150 and a standard deviation of 8.8. In addition to other qualifications, a score of at least 152 is required for admission to a particular graduate school. a) Determine the 80thpercentile of GRE scores b) Determine the GRE scores that...
Question 1 1 pts The correlation between score and first year GPA is 0.529. What is the critical value for the testing if the correlation is significant at a =.05? Question 2 1 pts To determine if the correlation is significant, what rule is used? correlation is significant if r<.05 correlation is significant if |r| < critical value O correlation is significant if r>.05 correlation is significant if |r| > critical value Information for questions 1-6: A graduate program wants...
Question 3 1 pts Is the correlation significant? Yes, quantitative GRE score can be used to estimate first year GPA No, quantitative GRE score can't be used to estimate first year GPA Question 4 1 pts The slope of the regression equation to predict first year GPA from quantitative GRE score is 0.00401, and the y-intercept is 0.88929. Select the regression equation. y = 0.88929x + 0.00401 ŷ = 0.88929x + 0.00401 y = 0.00401x + 0.88929 y = 0.00401x...
Question 6 3 pts For each of the quantitative GRE scores, use the regression equation to predict the student's first year GPA. Type either a numerical value or not appropriate. Round final answer to two decimal places. 400: 1 500: 600: Information for questions 1-6: A graduate program wants to determine if first year graduate student GPA, y, is linearly related to score on the quantitative section of the GRE, X, (Graduate Record Examinations). Data was collected from 15 randomly...
Q3. Z Distribution: From Probabilities to Proportions (percentages) Answer the following questions with this scenario: To assist students with deficient math skills, the local school district decides to use the standardized math test scores to identify students who are scoring in the lowest 4% in the whole population of fifth-graders. These students will then be enrolled in after-school tutoring sessions provided by the district to improve their math skills. Helpful tips: Review the tutorial videos on “how to use the...
please show all 6 steps with calculations! Assignment # 1 3: Between-Subjects ANOVA Instructions: For each research scenario, please complete the source table and conduct a hypothesis test at a-05 significance level using a between-groups ANOVA to determine if one group is different from the others. Please be sure to show your work when performing mathematical operations. Please round all calculations to two decimal places. Scenario 1. Dr. Smith has developed a new way to administer a GRE prep workshop...
A shelter has 24 dogs up for adoption. Suppose you want to adopt 2 of them. How many different ways could you choose 2 dogs from the 24? We are interested in analyzing data from bike sharing in LA. Use O to denote a one-way route and A to denote an annual pass. The probability that someone has a one-way trip route is 84.74%. The probability that they have an annual pass is 2.77%. The probability that they have an...