!.) Compute the predictive value positive and predictive value negative. Breast cancer is considered largely a hormonal disease. An important hormone in breast-cancerresearch is estradiol. The data in the table below on serum-estradiol levels were obtained from 213breast-cancer cases and 432 age-matched controls. All women were age 50-59 years.Serum estradiol (pg/mL)Cases (N = 213)Controls (N = 432)1-428725-99623310-14538615-19172620-2410625-2930+64Suppose a serum-estradiol level of 15+ pg/mL is proposed as a screening criterion for identifyingbreast-cancer cases.

Positive Predictive value: Suppose a serum-estradiol level of 15+ pg/mL is proposed as a screening…

Answered: ) Compute the predictive value positive…

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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Suppose that there is a correlation of r= 0.41 between the amount of time that each student reports studying for an exam and the student's grade on the exam. This correlation would mean that there is a tendency for people who study more to get better grades.
A rehabilitation counselor believes that an increase in the number of social visits to a patient over the course of a week in the hospital will increase the patient's daily levels of positive mood. The counselor ensures that patients are limited to only three people during each visit. What is the alternative hypothesis for this relationship? A. H1 : ρ < 0 B. H1 : ρ > 0 C. H1 : r < 0 D. H1 : r ≤ 0
The CDC (Center for Disease Control) did a study to see if there is an association between lung cancer and exposure to asbestos (this data set has been made up. However, my understanding is that the association has already been proven). The doctors at the CDC took a SRS of 20 people with lung cancer and a SRS of 30 people without lung cancer. Suppose the incidence of lung cancer is 1 out of every 1000 people (I made this number up).Let C = a randomly selected person has lung cancerLet E = a randomly selected person has been exposed to asbestosUse 3 decimal places for the following questions.P(C | E) =
A special education teacher did research on whether or not there is a relationship between the number of students in his class and the number incidents of “acting out” behaviors exhibited by the autistic students in the classroom. He collects data for a year and aggregates them by month. He obtained the statistics below, r= -.863 R2=.74 b= -1.212294 a= 131.176598 10.) How does the presence of more students affect the incidents in the class? a) as students are added the incidences increase b) as students are added the incidences decrease c) the number of students does not affect acting out d) the number of students caused more incidents How much of the variability of acting out is explained by the number of students in the class?___________
r. Lyte wishes to study speed of Reaction Time to press a button in response to the onset of a lamp. The independent variable (IV) is the color of the light produced by the lamp (red, orange, yellow, green, or blue). Since only 10 participants are available, she elects to administer the IV within-subjects with all 10 participants being exposed to all five levels of the color variable. The order of the color of the light presentation is to be counterbalanced. Using concepts from the textbook, why would Dr. Lyte need to use counterbalancing in this scenario?
OSE 2 Researchers conducted a study to estimate the relationship between a subject's brain activity while watching a television commercial and subject's subsequent ability to recall the contents of commercials. People think that long commercial recall is remembered by the people compared with the short one. In order to understand the difference researcher made 10 long commercial and a short one for each products and commercials are watched by the same person. Then subjects are asked what they remembered from the commercial and giving the correct answers are codded by the following table. 1 2345678910 Long Commercial Recall 108668 9786 Short Commercial Recall 4 23444462 2 Ce Test the claim that long commercials recall is more than short one (The duration of the commercial make a difference to recall). Calculate the test statistics. Maksimum 3900 karakter yazabilirsiniz.
Please answer number 17.
The following table indicates the unit prices (in Rands) and quantities of three goods purchased every month by a small restaurant for the years 2023 and 2024. GOOD 2023 2024 Unit Price (p0) Quantity (q0)) Unit Price (p1) Quantity (q1) Milk R12.60 2555 R12.85 2705 Eggs R11.00 114 R14.00 107 Flour R65.00 350 R68.50 400 Q.3.1 Using 2023 as the base year, compute the price relative in 2024 for milk and eggs. Interpret your answers. Q.3.2 Using 2023 as the base year, compute the Laspeyres price index for all of the goods for 2024. Interpret your answer. Q.3.3 Using 2023 as the base year, compute the Paasche price index for all of the goods for 2024. Interpret your answer.
The following table gives the quantity demanded of ice cream (Qic) in kgs per year in Sardinia (Italy), its price (Pic) in $ per kg, consumers’ income (I) in $, the temperature (T) in Celsius, and the price of cappuccino (Pc) in $ per kg: Year Qic Pic ($/kg) I ($) T Pc ($/kg) 2000 72000 11 2000 20 14 2001 81000 10 2100 24 15 2002 90000 9 2200 25 15 2003 99000 7 2305 26 16 2004 108000 6 2407 30 17 2005 126000 4 2500 32 18 2006 117000 7 2610 26 16 2007 117000 8 2698 25 16 2008 135000 5 2801 31 18 2009 135000 5 2921 31 18 2010 144000 4 3000 34 20 2011 180000 2 3099 36 21 2012 162000 5 3201 33 19 2013 171000 4 3308 35 21 2014 153000 6 3397 30 18 2015 180000 3 3501 35 22 2016 171000 4 3689 33 20 2017 180000 3 3800 36 23…
The independent variable in either a before/after t or a within subjects F is always of what data scale
Please answer number 17.
To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of credits for the course. Suppose a student had these grades:4.0 in a 5 credit Math course2.1 in a 2 credit Music course2.5 in a 5 credit Chemistry course3.3 in a 6 credit Journalism courseWhat is the student's GPA for that term? Round to two decimal places. Student's GPA =

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