According to a study, 80 % of adult smokers started smoking before 21 years old. 10 smokers 21 years old or older are randomly selected, and the number of smokers who started smoking before 21 is recorded. 1. The probability that at least 6 of them started smoking before 21 years of age is  Show your work below:   2. The probability that at most 7 of them started smoking before 21 years of age is  Show your work below:   3. The probability that exactly 9 of them started smoking before 21 years of age is  Show your work below:

Q: 27% of all college students major in STEM (Science, Technology, Engineering, and Math). If 49…

A:

Q: 33% of all college students major in STEM (Science, Technology, Engineering, and Math). If 45…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: 62% of all violent felons in the prison system are repeat offenders. If 37 violent felons are…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: Approximately 7.8% of all people have blue eyes. Out of a random sample of 25 people, find the…

A: The objective of this question is to calculate various probabilities, expected value, standard…

Q: Based on a​ poll, among adults who regret getting​ tattoos, 20​% say that they were too young when…

A: As per our guidelines we are suppose to answer three sub parts. Given,n=8p=0.20Let  X=no.of adults…

Q: Suppose that the probability that a child living in an urban area in the United States is obese is…

A: From the given information p = 0.20 and n = 15.

Q: 3. In the mass production of bolts it is found that 5% are defective. Bolts are randomly selected…

A: Givenn=10p=0.05Let X=no.of defective boltsX~Binomial (n=10 , p=0.05)P(X=x)=10x 0.05x 1-0.0510-x   ;…

Q: 48% of all violent felons in the prison system are repeat offenders. If 44 violent felons are…

A:

Q: Suppose a math class contains 44 students. There are 23 females (four of whom speak Spanish) and 21…

A:

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Solution: Let X be the number of adults say that they were too young when they got their tattoos and…

Q: The mean height of women in a country (ages 20 - 29) is 64.1 inches. A random sample of 55 women in…

A:

Q: According to a study, the probability that a randomly selected teenager studied at least once during…

A: Given that, According to a study, the probability that a randomly selected teenager studied at least…

Q: It was reported that 19.8% of computer games sold in 2005 were classified as "family and…

A: Given Let A = computer games sold were classified as " family and children" P(A)=19.8%=0.198

Q: A baseball team claims that the mean length of its games is more than 2.2 hours. State Ho State the…

A: The answer is attached below,

Q: 60% of all violent felons in the prison system are repeat offenders. If 49 violent felons are…

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

Q: a. exactly 3 began taking Valium for psychological problems. b. at least 5 began taking Valium for…

A:

Q: 9% of all Americans live in poverty. If 48 Americans are randomly selected, find the probability…

A:

Q: According to The World Bank, only 9% of the population of Uganda had access to electricity as of…

A:

Q: The probability that a person has a negative side effect from a medication is .08. Suppose you treat…

A: From the provided information, The probability that a person has a negative side effect from a…

Q: a. Exactly 16 of them are repeat offenders. b. At most 21 of them are repeat offenders. c. At least…

A: Given : 46% of all violent felons in the prison system are repeat offenders. i.e Probability…

Q: In Toronto, Canada, 55% of people pass the drivers' road test. suppose that 100 people take the…

A:

Q: outh Smoking Twò ðut 8I cquired the habit by age 14. If 400 smokers a andomly selected, find the…

A: Given X~ Binomial n=400 p=0.4

Q: Based on a poll , among adults who regret getting tattoos, 28% say that they were too young when…

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

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Givenp=0.23n=10x~Binomial(n=10,p=0.23)P(X=x)=(nx)×px×(1-p)n-x     ; x=0,1,...,n

Q: According to a study, 50 % of adult smokers started smoking before 21 years old. 15 smokers 21 years…

A: This question requires accurate results, Hence I will use excel to solve this question. Let "X"…

Q: Based on a​ poll, among adults who regret getting​ tattoos, 28​% say that they were too young when…

A: According to bartleby expert guidelines we can answer only first three subparts. Rest can be…

Q: Suppose a math class contains 42 students. There are 22 females (two of whom speak Spanish) and 20…

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

Q: Suppose a math class contains 28 students. There are 17 females (two of whom speak Spanish) and 11…

A: For the given data Find 1. What is the probability that a randomly selected student speaks Spanish,…

Q: When making random guesses on an 8 question quiz the probability of guessing correctly on any one…

A:

Q: Suppose a basketball player is a 73% free-throw shooter and he attempts 10 free throws. a. What is…

A: From the provided information, A basketball player is a 73% free-throw shooter that is p = 0.73…

Q: According to a study, 80 % of adult smokers started smoking before 21 years old. 6 smokers 21 years…

A: Given,n=6p=0.8q=1-pq=1-0.8=0.2A random variable X~Binomial(n=6 , p=0.8)P(X=x)=6x0.8x0.26-x  ;…

Q: 66% of all violent felons in the prison system are repeat offenders. If 34 violent felons are…

A: Formula : Binomial distribution is given by

Q: An airline estimates that the probability is 0.05 that people making reservations on a certain…

A: Probability is the measure of chances. It takes the values between 0 to 1. It never takes negative…

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.