Create a frequency tree. Here is what weknow: the overall frequency of the gene foryoung-onset Alzheimer's is 0.5% (e.g., itaffects one in 200 people).* A new genetictest has been developed that is both 95%accurate in terms of both sensitivity andspecificity in testing for the gene. Bob takesthis genetic test and he tests positive foryoung onset Alzheimer's. What is thelikelihood that Bob does in fact have the genefor young onset Alzheimer's?

Answered: Image /qna-images/answer/03ca06b9-6f86-4366-8773-17855c3dfec1.jpg

Answered: Create a frequency tree. Here is what…

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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When computing a correlation coefficient, if you have 27 degrees of freedom, your sample size must be _______. Enter your answer as a whole number with no decimal places (i.e., 10, not 10.1, not 10.01).
Please answer these questions thanks
Your statistics instructor often ponders the relationship between commute time and job satisfaction while driving back and forth to campus. Your instructor hypothesizes that people with a shorter commute time will have higher degrees of job satisfaction. Randomly sampling 600 Valley commuters, the instructor finds the following data listed in frequencies: Table 2: Commuters by Length of Commute and Job Satisfaction Job Satisfaction Number Who Commute 20 Minutes or Less Number Who Commute 21 to 40 Minutes Number Who Commute 41 Minutes or More Total Number for Each Level of Job Satisfaction Dissatisfied 10 60 140 210 Neutral 45 59 51 155 Satisfied 145 60 30 235 Total Number for Each Commute Time Range 200 179 221 1. Change frequencies to column percentages.
Of the 328 patients that completed the survey last year, 211 of them claimed to be returning patients which is 64.3% of the sample. What type of data, quantitative or categorical, is the question “How long did you wait past your appointment time?” asking for? Justify your answer.
Is the national crime rate really going down? Some sociologists say yes! They say that the reason for the decline in crime rates in the 1980s and 1990s is demographics. It seems that the population is aging, and older people commit fewer crimes. According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34 yearst. Suppose you are a sociologist in Rock Springs, Wyoming, and a random sample of police files showed that of 38 arrests last month, 24 were of males aged 15 to 34 years. Use a 10% level of significance to test the claim that the population proportion of such arrests in Rock Springs is different from 70%. (a) What is the level of significance? State the null and alternate hypotheses. O Ho: P = 0.7; H₁: p > 0.7 Ho: P = 0.7; H₁: P = 0.7 O Ho: P = 0.7; H₁: p 5 and nq > 5. O The Student's t, since np 5 and nq > 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) (c) Find the P-value of the test statistic.…
News reports speak of an emerging crisis of childhood obesity in the United States. The National Health and Nutrition Examination Survey (NHANES) is a government survey run every several years recording a number of vital statistics on a random sample of Americans. A body mass index (BMI) is computed for each individual in the sample based on the individual's height and weight. Here are sample results for 8-year-old boys over the past 40 years. The table gives the sample size for 3 different surveys, the sample mean and sample standard deviation. Suppose we want to run an ANOVA to see if there is a difference in mean BMI for the three surveys. Assume each survey is a random sample and there are no extreme outliers.What is the sample standard deviations for each survey? ...the NHES II study? ...the NHANES II study? ...the NHANES study?
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The Jaccard's coefficient is appropriate when it is more informative to match negative outcomes between observations. True or False True False
About 6% of the population has a particular genetic mutation. 1000 people are randomly selected.Find the mean for the number of people with the genetic mutation in such groups of 1000.
A researcher has 8 teenagers report the number of times they have left the house without their parents knowing. Scores ranged from 0 to 5. The scores were 3, 1, 2, 5, 3, 1, 3, 4. What is the percentile rank for X = 3: ____%? (RANK SCORES IN YOUR FREQUENCY TABLE FROM HIGHEST TO LOWEST) SHOW YOUR WORK (i.e., write out the columns of the table)!!! a. 62.5 b. 37.5 c. answer not listed d. 75
According to Crestmont Research, the stock market has been up in 53.7% of all trading days over the past fifty years. A stock is up if the price per share increases in value day-over-day. An investor wondered whether the proportion of days Amazon stock was up differed from the market. The following data represent a random sample of 200 trading days, where 1 indicates the stock was up for the day (an increase in the price) and 0 indicates the stock was not up for the day (either down or unchanged). Does this sample evidence suggest the movement of Amazon stock is different from the stock market? Use the a= 0.01 level of significance. Complete parts (a) through (h). Click the icon to view the sample of trading days. (a) Determine the null and alternative hypotheses if we want to know if the evidence suggests the movement of Amazon stock is different from the stock market. H₁: μ H₂₁ μ # (Type integers or decimals. Do not round.) [I 14 , 4 (1) More X

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