Use the following results from a fest for marijuana use, which is provided by a certain drug testing company. Among 142 subjects with positive test results, there are 21 false positive results. Am150 negative results, there are 3 talse negative results. Complete parts (a) through (c) (Hint: Construct a table)a. How many subjects were included in the study?The total number of subjects in the study wasRIDD

From the provided information, the following are interpreted:The no. of cases of "false positive" is…

Answered: Use the following results from a test…

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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Research Study: The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project. Instructions: Use the data collected to compute the values listed in Table#1. Use .05 significance. Research Data Collected: Student Chris Mary Paul Juan Marcelo Table #1 1. SP 2. 2 3. ΣΧ 4. 5. 6. 7. ΣΥ 9. SSX SSY a 8. b F ratio Number of pages typed 37 36 42 24 16 Typing speed 73 44 56 72 50 10. F critical (value from F table)
The State Education Department requires local school districts to keep these records on all students: age, race or ethnicity, days absent, current grade level, standardized test scores in reading and mathematics, and any disabilities or special educational needs the student may have. Which of the following are categorical (or qualitative) variables in these records? Days Absent Age Race or Ethnicity Disabilities or Special Needs O Reading Test Score Current Grade Level (A/B/C/D/F) Mathematics Test Score
Adela Noriegam, a researcher wants to determine how employee salaries at a certain company are related to the length of employment, previous experience, and education. The researcher selects eight employees from the company and obtains the following data: Employee Salary,y Employment (in yrs), x1 Employment (in yrs), x2 Employment (in yrs), x3 A 57310 10 2 16 B 57380 5 6 16 C 54135 4 1 12 D 56985 6 5 14 E 58715 8 8 16 F 60000 20 0 12 G 59400 9 4 18 H 60720 15 7 17 What is the regression equation? Leave your answer in 2 decimal places Y = ()+() +() +
A researcher is interested in the social media habits of American teenagers. The goal of the research is to determine the average number of hours each day that the entire group of American teenagers spend watching television. The researcher is trying to determine a number that is an example of a ?? A researcher is studying the behavior of American prisoners. The entire group of American prisoners is an example of a ?? A researcher is interested in mental health outcomes for US College students. If she obtained Depression Inventory scores for a group of college students, the mean score would be an example of a ??
You are responsible for a data analysis exercise in your first job (as a data analyst) after graduating and have downloaded some associated reports. Your first task requires you to write a data dictionary and determine what type of variable the data you are dealing with relates to. Which of the following are categorical variables? Select one: a. The number of marks out of 10 that an employee obtained on the company’s information technology training. b. The number of employees in each division c. The number of years of service of each employee. d. The employee’s tax file number. e. The pro-rata income for all employees within the business/finance division.
The following tables show the make-up of students in a school's math club. Male Female | Totals Freshmen 3 Sophomores 6 4 10 Juniors 7 12 Seniors 4 6 10 Totals 20 20 40 P(juniors I male)? 3 20
What conclusions do you reach from this chart? A. There is an approximately equal percentage of males and females who enjoy shopping for clothing. B. There is a higher percentage of males who enjoy shopping for clothing. C. There is a higher percentage of females who enjoy shopping for clothing. D. The side-by-side bar chart is inconclusive. O A. Yes- No- 0. 100 200 300 400 Frequency Male C Female
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 140 subjects with positive test results, there are 30 false positive results. Among 159 negative results, there are 3 false negative results. Complete parts (a) through (c). (Hint: Construct a table.) a. How many subjects were included in the study? The total number of subjects in the study was ...
The following tables show the make-up of students in a school's math club. Male Female Totals Freshmen 3 5 8 Sophomores 4 10 Juniors 7 5 12 Seniors 4 10 Totals 20 20 40 P(female I freshman)? 4 20
A group of students were asked how many times they exercised in the past week. The results were: 0,0,0,0,0,1,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,5,6,7,7,7. a. Construct a histogram summarizing the data. Use [0,2), [2,4), etc. as the bins b. Describe the shape and the modality of the histogram.
Research Study: The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project. Instructions: Use the data collected to compute the values listed in Table#1. Use .05 significance. Research Data Collected: Student Chris Mary Paul Juan Marcelo Table #1 1. SP 9 2. r2 3. ΣΧ 4. ΣΥ 5. SSX 6. SSY 7. a 9. 8. b F ratio Number of pages typed 37 46 18 26 16 Typing speed 62 56 25 50 55 10. F critical (value from F table)
complaint and, if so, whether the complaint was medical or nonmedical in nature. After a year, a tally from these patients was collected to count number who left the HMO voluntarily. Here are the data on the total number in each group and the number who voluntarily left the HMO: No complaint Medical complaint Nonmedical complaint Total A certain health maintenance organization (HMO) wishes to study why patients leave the HMO. A SRS of 423 patients was taken. Data was collected on whether a patient had filed a 177 111 135 Left 64 27 50 If the null hypothesis is Ho : pı = P2 = P3 and using a = 0.05, then do the following: (a) Find the expected number of people with no complaint who leave the HMO: (b) Find the expected number of people with a medical complaint who leave the HMO: (c) Find the expected number of people with a nonmedical complaint who leave the HMO: (d) Find the test statistic: (e) Find the degrees of freedom: (f) Find the critical value: (g) The final conclusion is OA. We…

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