According to a recent study, 62% of adults of age 65 and older do not have sufficient funds saved for retirement. What is the probability that in a sample of 150 adults of age 65 and older, less than 100 do not have sufficient funds saved for retirement?

Q: In a recent study nationwide, it was found that 41% of people own dogs. If you pick two people at…

A: Given that  It was found that 41% of people own dogs. P(Dog) = 41% = 0.41   We know that…

Q: Suppose that a fast food restaurant can expect two customers every 3 minutes, on average. What is…

A: In this question we will be using Poisson distribution.  It is given that the restaurant can expect…

Q: A fuel company conducts a geologic survey that has a 20% chance of striking an oil reserve. What is…

A: Given,A fuel company conducts a geologic surveythat has a 20% chance of striking an oil reserve

Q: otel manager assumes that 13% of the hotel rooms are booked.   If the manager is correct, what is…

A: Given: Population proportion (p) = 0.13 Sample size (n) = 423 The distribution of sample proportion…

Q: A pharmaceutical company claims that 20% of those taking its new allergy medication will experience…

A: Of the people who take the new allergy medication of the company, p = 20% will experience…

Q: According to a survey, 70% of adults believe that every university student should take at least one…

A: a) Given information: p=70%=0.70 n=sample size=14 Let X be the number of adults hold to view follows…

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: In one study, researchers at a clinic looked at more than 120,000 patients enrolled in 14…

A: Given Information:  Researchers at a clinic looked at more than 120,000 patients enrolled in 14…

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: On the average, 10 people per hour use an express teller machine situated inside a commercial…

A:

Q: In a Survey, 85% of the people interviewed were unaware that maintaining a healthy weight could…

A: Givenp=0.85n=20Let "x" be the no.of people are unware that maintaining a healthy weightcould reduce…

Q: An oil company has determined that the probability of finding oil at a particular drilling operation…

A: Let p be the probability of finding oil at perticular drilling operations.  Given p=0.20  Let X be…

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: In a recent study nationwide, it was found that 51% of people lost their keys in the past year. If…

A:

Q: The opera theater manager assumes that 10% of the opera tickets for tonight's show have been sold.…

A: Let X denotes tickets being sold. Probability of a ticket being sold (p) is given to be 0.1. a…

Q: A study on sales of a product determines that on average, there are 490 units sold on a week. What…

A:

Q: In a police report submitted by the Cordillera Police Station, poverty is the main reason mentioned…

A: Solution: Let X be the number of crimes resulted from poverty as the main reason for committing…

Q: According to an article, 22.6% of Internet stocks that entered the market in 1999 ended up trading…

A:

Q: A sales firm receives, on average, 3 calls per hour on its toll-free number. For any given hour,…

A:

Q: According to an article, 11.4% of Internet stocks that entered the market in 1999 ended up trading…

A: Solution: Let X be the number of internet stocks end up trading at or above their initial offering…

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

A: Solution: From the given information, the probability that speeding is a cause of a fatal crash is…

Q: According to a posting on a website subsequent to the death of a child who bit into a peanut, a…

A: Let A be the event that a person has food allergy Given, P (A) = 4% = 0.04. Let B be the event that…

Q: A recent study by Allstate Insurance Co. finds that 78% of teenagers have used cell phones while…

A:

Q: In an experimental study in the Philippines, citizens with a certain blood type volunteer for a test…

A: If each trial has only two possible outcomes, i.e., success and failure, the probabilities of…

Q: A new brand of drug-free nasal strip claims to be 90% effective in relieving nasal congestion to…

A: From the given information the probability of success is 0.9

Q: A phone company reports that 52 % of its customers subscribe to their high-speed internet service.…

A:

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: three out of four university students under 25 years old have eaten eggs for breakfast. If a random…

A: Solution: Given data: Probability, P = 3/4  = 0.75 Sample size (n) = 20 To find : the probability…

Q: In a state where cars have to be tested for emission of pollutants, 25% of all cars emit excessive…

A: To find: the probability that a car fails the test.

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: What is the probability that 8 out of 12 customers will see dramatic results? What is the…

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: A large national study finds that 10% of pregnant women deliver prematurely. A local obstetrician is…

A: Given: Probability of women deliver prematurely is, p=10%=0.1. Number of pregnant women is, n=16.…

Q: Based on this table, what is the probability that a student shows improvement if it is known that…

A: The data is given by   Improvement No improvement Total Attend 190 50 240 Not attend 200 200…

Q: Based on data covering two consecutive school years, the National Safety Council found that fourth…

A: It is given that injuries rate is 2.4 per 100,000 students-day. Thus, the average number of student…

Q: A survey of magazine subscribers showed that 43% rented a car during the past 12 months for business…

A: Let A be the event that a person rented a car during the past 12 months for business reasonsLet B be…

Q: A safety engineer claims that only 40% of all workers wear safety helmets when they eat lunch at the…

A: Given,n=6p=0.4q=1-0.4=0.6A random variable X~Binomial(n=6 , p=0.4)P(X=x)=6x0.4x0.66-x   ;…

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: In a retirement community, 13% of cell phone users use their cell phones to access the internet. In…

A:

Q: In a retirement community, 13% of cell phone users use their cell phones to access the internet. In…

A:

Q: According to a life insurance​ company's mortality​ table, the probability that a woman of a certain…

A: The given data: Probability that a woman will survive= 0.993 Probability that the woman will die =…

Q: cording to the Center for Disease Control (CDC), the percentage of boys who are diagnosed with…

A: Given data,  the percentage of boys who are diagnosed with autism by the age of 8 is 2.7%.…

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: In a recent survey in a Statistics class, it was determined that only 60% of the students attend…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A safety engineer claims that only 30% of all workers wear safety helmets when they eat lunch at the…

A: The Probability mass function for Binomial distribution is given by                     P(X=x)=ncx…

Q: A group of realtors estimates that​ 23% of all homes purchased last year were considered investment…

A: Givenp=0.23n=800x~Binomial(n=800,p=0.23)

Q: According to a recent study, 1 in every 7 women has been a victim of domestic abuse at some point in…

A: Given that 1 in every 7 women has been a victim of domestic abuse at some point in her life.…

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.

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.