The National Institute for Sports estimates that 11​% of all college athletes use steroids. A new test correctly diagnoses the presence of steroids in 94​% of athletes that have used steroids in the past 18 months. The test gives a positive result to 14​% of athletes who do not use steroids.   What is the probability an athlete uses steroids given that he has a negative​ result?

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A:

Q: snip

A: If a single ambulance is available at 70% of the time and three ambulances are stationed in a…

Q: on an uninfected person. What is the probability that a randomly tested person from this area will…

A: given that

Q: Given that a random person just tested positive, determine the probability of having this illness.

A: Here use tree diagram

Q: What is the probability that the accident occurred on either the evening or the graveyard shift?

A: It is given that P(evening) = (6 + 25)% = 31% = 0.31 P(graveyard) = (2 + 30)% = 32% = 0.32

Q: An economics professional body estimates that 75% of the students taking undergraduate economics…

A: Solution: Let X be the random variable that students taking undergraduate economics courses are in…

Q: The probability that an individual is​ left-handed is 0.130. In a class of 25 ​students, what is…

A:

Q: A university administrator expects that 25% of students in a core course will receive an A. He looks…

A:

Q: Find the probability that a randomly selected student was female given that the student earned a…

A: Given:    A B C total  Male 2 19 20 41 Female 7 4 8 19 Total 9 23 28 60

Q: (a) One prominent physician claims that 70% of those with lung cancer are chain smokers. If his…

A: Given information: P(Chain smokers) = 0.70 n = 12 Determine the required probability using the…

Q: The average number of automobiles per minute stopping for a gas at a particular service station…

A: Given Information: The average number of automobiles per minute stopping for a gas at a particular…

Q: According to a study by a road safety interest group, the probability that speeding is a cause of a…

A: We have to find given probability.

Q: What is the probability that the flight is between 30 to 60 minutes late or from airline B?

A: Define some events A: The flight is 30 to 60 minutes late B: The flight is from airline B. And,…

Q: A survey on campus revealed that 77% of the students felt that a new attendance policy was unfair.…

A: Given that the probability that the students felt that a new attendance policy was unfair is = 77%…

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A: Let X denote the no.of adults in a certain country have hypertension and it follows binomial…

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

A: Here, the non-infected persons have a 10% chance of getting mumps from an infected person after 1…

Q: The probability that an individual is left-handed is 0.140. In a class of 15 students, what is the…

A: Here, n = 15 and p = 0.140.

Q: The centers for disease control reported that 16% of college aged individuals used vapes in…

A: Given information Probability of using vapes = 0.16 No of individuals n = 750 Probability that less…

Q: The National Center for Health Statistic reported that of every 883 deaths in recent years,24…

A: It is given that, Total number of death in recent year =883 Deaths from an automobile accident =24…

Q: If the probability of contracting a certain illness is 0.0433, would it be considered statistically…

A: Let p be the probability of contacting a certain illness  Given  p=0.0433

Q: The probability that an individual is​ left-handed is 0.190. In a class of 27 ​students, what is…

A: From the provided information, Sample size (n) = 27 Probability that an individual is left-handed…

Q: A computer shop has noted that they have an average of 8 customers per hour. What is the probability…

A: Given information Average of 8 customers per hour No of customer in two hour is given by

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

A:

Q: The director of a health club conducted a survey and found that 23% of members used only the pool…

A:

Q: The average number of cars arriving at a drive-thru fast food restaurant is 3 in ten minutes, what…

A: GivenAn average no.of cars arriving at a drive-thru fast food restaurant is 3 in tenminutesλ=1.5 for…

Q: A recent survey conducted by a reputable company indicates that the proportion of college students…

A: Given that p=0.32 , n=200,p( phat <0.25 ) =?

Q: The national center for health statistics has found that there is a 5.01% chance that an american…

A: There is 5.01% chance that an American citizen will die from an accident.

Q: According to a National Public Radio poll, 46% of American school students pay no attention to sex…

A:

Q: A survey was conducted to determine the proportion of Grade 11 students who engage in under-age…

A: We have given that p = 0.70 n = 100 We have to calculate  P(x> 0.65)

Q: The probability that a football game will go into overtime is 11​%. What is the probability that…

A: The probability that a football game will go into overtime is 11​%. Probability = 11% = 0.11 Sample…

Q: A recent survey found that​ 70% of all adults over 50 wear sunglasses for driving. In a random…

A: Given that in a recent survey found that​ 70% of all adults over 50 wear sunglasses for driving.…

Q: According to a study on teenage shopping behavior, it was found that 74% of female teens regularly…

A: Answer: Given that: p= 0.74 , n= 6 now will use Binomial probability P(X=x)=nx*px*(1–p)n–x,where…

Q: What is the probability that the second ball is red, given that the first ball is red?

A: There are two urns contains two different colors of ball. First urn contains 6 red balls and 3 blue…

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A:

Q: An economics professional body estimates that 80% of the students taking undergraduate economics…

A:

Q: Most doctors agree that 75% of those who suffer lung cancer are chain smokers. Based on this data,…

A:

Q: If a seed is planted, it has a 80% chance of growing into a healthy plant. If 11 seeds are planted,…

A: Solution Given: Sample size (n) = 11 p (don't grow into a healthy plant) = 1- p (grow into a healthy…

Q: According to a study on teenage shopping behavior, it was found that 75% of female teens regularly…

A: Solution: Let X be the number of teenagers do their shopping in stores and n be the number of…

Q: The National Association of Realtors estimates that 23% of all homes purchased in 2004 were…

A: Given: p=0.23 n=800 x=200 The sample proportion is, p^=xn=200800=0.25

Q: Suppose the test is negative. What is the probability that the person actually has been exposed to…

A: question:

Q: Public Opinion reported that 5% of Americans are afraid of being alone in a house at night. If a…

A: There is only two possibilities either the selected person is afraid of getting alone as success or…

Q: If a seed is planted, it has a 80% chance of growing into a healthy plant.If 6 seeds are planted,…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 7 seeds are planted,…

A: Let x be number of plants don’t grow. Here x follows binomial distribution with parameters n = 7 and…

Q: A market research organization surveyed 102 people and found that 73 of them would like more…

A: GivenThe total number of people the market research organization surveyed = 102 The total number of…

Q: The mean number of car sold by Beachcomber LTD per day is 3.What is the probability that in any…

A: Here Given  Avg number of cars sold =3 Here we can Use poission distribution

Q: A communications industry spokesperson appeared on a national television show and was discussing…

A: Given The proportion of people in United states own a cell p=0.96The sample size n=50The formula for…

Q: What is the probability that a non-infected person contracts mumps after 10 brief encounters with…

A: Since , P(contracting mumps from an infected person from even a brief encounter)=0.10 Our aim is to…

Q: Based on a study by Dr. P. Sorita at Indiana University, approximately 12% of people have green…

A: It is given that n =0.12 and n = 650.

Q: A recent study reported that the prevalence of hyperlipidemia is 30% in children. If 12 children…

A: Probability of Hyperlipidemia(p) = 0.3Total number of children(n)=12Number of children suffering…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.