COE 502 Assignment #3 Your Name: Date: You must record your student ID# or your assignment will not register: Student ID # (9 digits, no dashes): Assignment 3 Please note: completing this assignment involves a knowledge of standard scores and the normal distribution. Excel is not directly used in the work here. a) What is percentile of an SAT score of 720 (assuming that SAT scores have a mean of 500 and a standard deviaiton of 100)? b) Is an SAT score of 720 "better" (i.e., relatively higher in the national norm group) than an ACT score of 28? (Note: the national norm mean and standard deviaiton for the ACT test are 20 and 5, respectively.) Please explain your answer: a) What is percentile of an LDL serum cholesterol measure of 170 if the mean for adults is 195 with standard deviation of 20 and cholesterol measures are normally distributed? b) How many "adults" (assume "adult" refers to age equal 20 or older) in the United States would you expect to have an LDL serum cholesterol measure of 170 or less? (This link will help you determine how many Americans are age 20 or older.) Please give the details of how you derived your answer: For Grade Equivalent scores in Reading in September of Grade 5, the national mean is 5.0 and the standard deviation is 1.5 yrs. What percent of beginning fifth graders read better than the average beginning sixth grader? (Assume that entering sixth graders have Reading scores that are normally distributed with a mean of 6.0 and a standard deviation of 1.5.) Show your work: home | online calc. | lesson: one | two | three | four | five | six
Your Name: Date: You must record your student ID# or your assignment will not register: Student ID # (9 digits, no dashes): Assignment 3 Please note: completing this assignment involves a knowledge of standard scores and the normal distribution. Excel is not directly used in the work here. a) What is percentile of an SAT score of 720 (assuming that SAT scores have a mean of 500 and a standard deviaiton of 100)? b) Is an SAT score of 720 "better" (i.e., relatively higher in the national norm group) than an ACT score of 28? (Note: the national norm mean and standard deviaiton for the ACT test are 20 and 5, respectively.) Please explain your answer: a) What is percentile of an LDL serum cholesterol measure of 170 if the mean for adults is 195 with standard deviation of 20 and cholesterol measures are normally distributed? b) How many "adults" (assume "adult" refers to age equal 20 or older) in the United States would you expect to have an LDL serum cholesterol measure of 170 or less? (This link will help you determine how many Americans are age 20 or older.) Please give the details of how you derived your answer: For Grade Equivalent scores in Reading in September of Grade 5, the national mean is 5.0 and the standard deviation is 1.5 yrs. What percent of beginning fifth graders read better than the average beginning sixth grader? (Assume that entering sixth graders have Reading scores that are normally distributed with a mean of 6.0 and a standard deviation of 1.5.) Show your work: home | online calc. | lesson: one | two | three | four | five | six
You must record your student ID# or your assignment will not register: Student ID # (9 digits, no dashes):
b) Is an SAT score of 720 "better" (i.e., relatively higher in the national norm group) than an ACT score of 28? (Note: the national norm mean and standard deviaiton for the ACT test are 20 and 5, respectively.) Please explain your answer:
b) How many "adults" (assume "adult" refers to age equal 20 or older) in the United States would you expect to have an LDL serum cholesterol measure of 170 or less? (This link will help you determine how many Americans are age 20 or older.) Please give the details of how you derived your answer: