Problem: In an examination at which 600 candidates appeared, boys outnumbered girls by 16% of all candidates. Number of passed candidates exceeded the number of failed candidates by 310. Boys failing in the examination numbered 88. Find the coefficient of association between male sex and success in examination.

Q: Individuals at risk for colon cancer are advised to have a colonoscopy beginning at age 50. The…

A: Given that: Total number of patients = 250   Colon cancer: yes Colon cancer: no Total…

Q: In 2016 the Better Business Bureau settled 77% of complaints they received in the United States.…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: A survey shows that 3/5 Australian adults are overweight and 1/10 Australian adults are obese. What…

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Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: The Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a…

A: Male :  Sample mean(M1) = 40.26  Standard deviation(S1) = 13.35  Female :  Sample mean (M2) = 36.85…

Q: A pharmaceutical company conducts a study where 50 patients are given a drug. They find that 10…

A: Sample is the subset of the population.

Q: Keiko asked 15 students how many courses they have taken so far at her college. Here is the list of…

A:

Q: 31 of 48% is what?

A: 31 of 48%

Q: among students of a certain university 38 like peanut butter, 34% like nutella, and 12% like both.…

A: It is given that:Proportion of students like peanut butter: Proportion of students like nutella:…

Q: If 200 subjects were studied and 120 of them expressed a preference for Brand X, what percentage…

A: The total number of subjects is 200.

Q: If a child psychologist wanted to determine if there is a relationship between gender of a child and…

A: Chi-square test of independence should be used here.

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols. Thinking…

A: To find: 1.Test statistics 2.p-value

Q: You survey 100 people and find that 75 of them would prefer to work at home to some extent. When…

A: Given: You survey 100 people and find that 75 of them would prefer to work at home to some extent.…

Q: Maci is a social networking maniac! Although she prefers Instagram, she also spends a lot of time…

A: Introduction A variable is a no., characteristic which can be counted or measured.

Q: A test question is good if it discriminates between prepared and unprepared students. The first…

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Q: a. Identify the population(s). of those who take the drug actually get headaches. 5% of those who…

A: It is given that a deug company that an allergy medication causes headaches in 5% of thise who take…

Q: Suppose that 35% of people own dogs. If you pick two people at random; what is the percent that they…

A: Solution: From the given information, the probability of people own dog is 0.35. Here, two people…

Q: The proportion of commuters on PSU – Berks campus is purported to be 65%. A professor believes this…

A: Given P0=65% = 0.65 Let X = Number of commuters on PSU  X = 200 n = 300

Q: A recent year was randomly picked from 1985 to the present. In that year, there were 2,052 Hispanic…

A: Public university:Sample size Number of Hispanic students Community college:Sample size Number of…

Q: Suppose 20% of cars are sportscars and that 30% of sportscars are red, and that 25% of all cars are…

A:

Q: A study was conducted to investigate a relationship between the colors of helmets worn by motorcycle…

A: When the given sample size is less than 30, then we use a small sample test in hypothesis testing.…

Q: The percentage of people who have white blood cell counts over 10,500 is

A: To determine the percentage of people who have white blood cell counts over 10,500, we need to know…

Q: Recherchers conducted two surveys about teens are their use of social media. The First survey asked…

A: Here we use the proportion concept.  P = x / n Pooled proportion formula P(cap) = ( x1+ x2) / ( n1+…

Q: Identify the population(s): All individuals who take the medication. The proportion of those who…

A: Here the population will be all the individuals who take the medication. Variable being examined for…

Q: Researchers conducted two surveys about teens are their use of social media.  The first survey asked…

A: Solution If the confidence interval does not contain zero then there is no difference between…

Q: In a sample of 169 students, 16 said they have donated blood. What percent of the students have…

A: Given that, In a sample of 169 students, 16 said they have donated blood.