What is the positive predictive value of OraQuick, P(HIV | positive test), in this high-risk population? (Enter your answer rounded to four decimal places.) P(HIV | positive test) = 1.0762 Incorroct

Q: After conducting a one-sample Z-test, you arrived at a value of -12.5 for the z value. What is your…

A:

Q: Mathew determines that the “power” for detecting a posttest score of the size Mathew expects with…

A: Power: The probability of rejecting the null hypothesis, assuming that the null hypothesis is false.…

Q: Discuss the applications of error probability?

A: Before discussing the applications of error probability, first we discuss about the error…

Q: dents at the university spend 10 or more hours reading weekly. Run a Z test and state the p value.…

A: The following null and alternative hypotheses need to be tested: H0​:μ​=10 Ha​:μ​>​10​ This…

Q: The probability of winning on an arcade game is 0.606. If you play the arcade game 20 times, what is…

A: Let P denote the  probability of winning on an arcade game = 0.606.  Let n denote the number of…

Q: Find the following: a) The sample Space. b) P(A) c) P(B)

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The probability of winning on an arcade game is 0.711. If you play the arcade game 18 times, what is…

A: Binomial distribution:The events that has exactly two possible outcomes (success or failure) follows…

Q: Below is a table that a sample of 100 people from a school and what type of car they drive and if…

A: From the given information,   Foreign Domestic Total Student 15 35 50 Staff 25 25 50 Total…

Q: Which three elements are used in determining the ‘Risk Number’?

A: Before investing we need risk analysis and we want to sure about our risks so here in question we…

Q: Illustrate different types of sampling (Probability & Non Probability) with real life examples.

A: Probability & Non probability Sampling

Q: A researcher is interested in the impact of joining a weight loss program in the past 12 months on…

A:

Q: This question asks you to extend the medical-test example from class. Suppose there is a medical…

A:

Q: Define the concept of expected value?

A: The expected value of the random variable is nothing but the mean value of the random variable. It…

Q: You are performing a left-tailed test with test statistic z=-0.55, find the p-value.

A: Given that a left-tailed test with test statistic z=-0.55.

Q: A teacher claims that over 15% of maths students are married, in the survey at the beginning of…

A: Answer: From the given data, Claim: A teacher claims that over 15% of maths students are married…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given that,sample size(n)=667success rate ( p )= x/n = 0.59success probability,( po )=0.5failure…

Q: In a study, 52 cars are given synthetic blend motor oil and 76 cars received regular motor oil to…

A: n1 = 52  n2 = 76

Q: For the chi-square test of independence, how is the p-value evaluated?

A:

Q: What does The regular t test is designed to Evaluate?

A: The regular t-test is used to evaluate the difference in the means of the populations. t-test can…

Q: A survey in Brighton among cancer patients revealed that 62 out of 454 women patients are diagnosed…

A: Solution: Let X1 be the number of women patients are diagnosed with lung cancer, X2 be the number of…

Q: Use the chart below to answer questions 1-6 about the ACT's. The ACT is a standardized test used by…

A: Here's, mean is 20.7 and standard deviation is 5.2 for Math section. We will use z-standard normal…

Q: A group of researchers have decided to conduct a study to see if this screening test truly has the…

A: Given the table is, Disease statusNegative Positive TotalsNegative751287Test…

Q: Amount of reading Above average Average Below average Total Glasses? Yes No 47 26 48 31 126 78 70…

A: The total number of observations is .The observed frequency is shown below:GlassesAmount of…

Q: What is the probability of scoring above a z-score of -2.00?

A: X~N( μ , ?)μ=0     , ?=1Z-score =( x - μ )/?

Q: In a National Institute on Alcohol Abuse and Alcoholism survey, 33% of American adults said that…

A: Population proportion, p=0.33 Sample size, n=2300 Sample proportion, p^=0.35

Q: Reviewing the sample of offspring of "highly irradiated" male radiologists 92 were female and 53…

A: The total number of offspring in the sample can be calculated as:

Q: The Congressional Budget omoe reports that 3s of federal dvilan employees have a bachelors degree or…

A: Proportion z_test: If the given sample size is more than 30 then that is a large sample test. z test…

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A:

Q: Explain the difference between a chi-square test for independence and a chi-square goodness of fit…

A: Explain the difference between a Chi-square test for independence and a chi-square goodness of fit…

Q: How do you find experimental probability

A: Theoretical probability: This is the probability value that is expected to happen. It is the ratio…

Q: Imagine that 200 people who do not have TB participated in the TB test. The test indicated 85.5% of…

A: False positive shows the there person does not have disease but they detected to have disease in the…

Q: 24 hours fitness wants to determine whether the number of days per week that college students spend…

A: Here ,  There are two categorical variables (Days per week spend exercising) & (Gender)  Here…

Q: True or False p<.05 is a standard number found to prove that there had been an effect.

A: Solution-: p&lt;0.05 is a standard number found to prove that there had been an effect. (a) True…

Q: what does it mean to have a z-score between -1 and 1? Does that include decimals like 0.341 and…

A: A standard Z-score describes the number of standard deviations above or below the mean.

Q: This means the test statistic will equal approximately what value

A: It is given that Sample size n = 750 Number of users under the age of 18, X = 51

Q: that afflicts 20% of the population. There is a test for this condition, and the reliability st can…

A:

Q: FICO scores range in value from 300 to 850, with a higher score indicating a more creditworthy…

A: Left skewed distribution, mean is to the left of median i.e. Mean is less than Median. For a skewed…

Q: It the​ 1980s, it was generally believed that congenital abnormalities affected about 6​% of a…

A: Hypothesis Testing: It is basically a comparison of the statistical measures of the data with one…

Q: (b) What is the probability that a random sample of 11 second grade students from the city results…

A: we have given that mu=89  ,sigma=10 n=11

Q: in a nation would skip an ortant event such rthday party ersary dinner to watc e pr Assume the…

A: given data, n=629x=433p^=xn=433629=0.6884α=0.10claim:p&gt;0.66

Q: For this hypothesis test do you think the results would have been different if the values had first…

A: It is given that the population mean weight of all male adults is greater than 80 kgs. For this…

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related. 

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.