survey of 2436 men age 18 and older in 1998 for the commonwealth Fund indicated that more than half did not have a physical exam or a blood cholesterol test in the past year. A medical researcher plans to sample men in her community randomly to see if similar results occur. How large a random sample would she need to estimate this proportion to within 0.05 with probability 0.95?

Q: It is estimated that 1 in 59 students in Canada have been diagnosed with Austism Spectrum Disorder.…

A: Given data: The expression for the probability that 1 in 59 students in Canada has been diagnosed…

Q: It has been shown by claims that have been made that 20% of parcels arrive damaged when using an…

A:

Q: Suppose a large shipment of stereos contained 11% defectives. If a sample of size 311 is selected,…

A: Solution: From the given information, p=0.11 and n=311.

Q: The manager of Vangaurd Assurance has recently examined the automobile insurance customers and found…

A: It can be observed that there are two possible outcomes. Now for such probability questions, normal…

Q: A leading large college recently reported that 40.5% of its student body had concerns about the…

A:

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

A:

Q: In one study of calls to 911 in Los Angeles, it was found that 85% of the calls were not…

A: Solution: From the given information, the proportion of the calls were not emergencies is p=0.85 and…

Q: Seventy percent of rivets from vendor A meet a certain strength specification, and 80% of rivets…

A: Let T denotes with the addition of two random variables(X+Y)

Q: A recent study of cardiovascular risk factors reported that 30% of adults met criteria for…

A:

Q: 13 percent of the patients in a study reported previous episodes of stroke or transient ischemic…

A: Solution: Given information: n= 70 Sample size  p= 0.13 Population proportion.

Q: In a particular survey of internet users, 3713 respondents say that they use social networking sites…

A: We want to find the probability

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

A: Probability of success, p=0.23 and n=800.

Q: An insurance company classifies the airplane it insures into class L (low risk) and class H (high…

A: a) It is given that, the proportion of airplanes belongs to class H is 30% or 0.3.

Q: It is estimated that 75% of all young adults between the ages of 18 and 35 do not have a landline in…

A: Givenp=0.75sample size(n)=100Let "x" be the adults do not own a…

Q: Based on a​ poll, 61​% of Internet users are more careful about personal information when using a…

A:

Q: A fortune 500 company asked its 1520 employee this question: “Did the work condition too…

A: Given information can be shown in the table below:   Yes No Total Males 134 651 785 Females…

Q: The southeast regional manager of General Express, a private parcel-delivery firm, is worried about…

A: Given: Let A represents the event of Pilots. Let B represents the event of drivers. The probability…

Q: Based on a study by Dr. P. Sorita Sona at Indiana University, about 35% of the population has blue…

A: Let the random variable X denote the no. of individuals has blue eyes and it follows binomial…

Q: A sample preparation for a chemical measurement is completed correctly by 25% of the lab…

A:

Q: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces.…

A:

Q: College Degree Yes No Loan Satisfactory Delinquent .26 .24 50 Status .16 .34 50 .42 .58

A: As various parts are given, so according to our policy we are providing you the answer of first…

Q: It is estimated that 75% of all young adults between the ages of 18-35 do not have a landline in…

A: Solution: h. From the given information, the probability of all young adults between the ages of…

Q: It is generally believed that 29 % of all pieces of candy in a family pack of Hershey’s candy are…

A: Given The percentage of all pieces of candy in a family pack of Hershey's are dark chocolate =…

Q: A journalist wanted to learn the views of the chief executive officers of the 500 largest U.S.…

A: Given : Sample size (n)=81population proportion (p)=0.55 P( p^<0.50)=?

Q: Suppose a large consignment of cell phones contained 19% defectives. If a sample of size 399 is…

A: Given Population proportion is 19% sample size is 399

Q: In a recent​ year, about 38​% of all infants born in a country were conceived through​ in-vitro…

A:

Q: An insurance company classifies the airplane it insures into class L (low risk)   and class H (high…

A: Given, P(L)=0.7 P(H)=0.3 P(no accident | L)=0.99 P(no accident | H)=0.88 Conditional probability:…

Q: In a survey of Canadian nurses who worked more than 45 hours per week, it was found that 321 nurses…

A: Given Data n(nurse under 35 age)=321 n( nurse between 35 to 55 age)=403   Total=321+403=724

Q: An automobile manufacturer has determined that 25% of all gas tanks that were installed on its 2002…

A: Let x = the number of the 15 cars with defective gas tanks. Then x is a binomial random variable…

Q: Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the…

A: Given P=10%=0.1 n=200

Q: After being rejected for employment, Appa Love learns that the Old West Credit Company has hired…

A: 1. According to the provided data, the sample size, n is 20 and the value of x is 6. The claimed…

Q: Based on a​ poll, 67​% of Internet users are more careful about personal information when using a…

A: Consider a random variable X which represent the number internet users who are more careful about…

Q: In a recent year, about 37% of all infants born in a country were conceived through in-vitro…

A: It is given that , In a recent year. about 37% of all infants born in a country were conceived…

Q: Suppose a large consignment of televisions contained 22% defectives. If a sample of size 480 is…

A:

Q: According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had developed…

A: Given that 202 of a sample of 5,990 middle-aged men had developed diabetes.

Q: In a recent year, about 34% of all infants born in a country were conceived through in-vitro…

A: a) It is given that about 34% of all infants born in a country were conceived through IVF.

Q: In a recent year, Delaware had the highest capita annual income with $51, 803. If σ = $4850 , what…

A: Given,  = 51803 ,  = 4850 Using central limit theorem, P( < x) = P(Z < ( x -  ) / (  / sqrt…

Q: A random sample of 270 homes was taken from a large population of older homes to estimate the…

A: Given: A random sample of 270 homes was taken from a large population of older homes to estimate the…

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: A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just…

A: It is given that, Aspirin claims that the proportion of headache sufferers who get relief with just…

Q: According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had developed…

A: Let S be the sample space and E be the event in S.  The probability of the event E is denoted by PE…

Q: According to a poll of​ adults, about 40​% work during their summer vacation. Assume that the true…

A: From the given information, Sample size (n) = 500 Probability of success (p) or adult work during…

Q: An online customer service department estimates that about 15 percent of callers have to wait more…

A: At most two callers means callers less than or equal to two. Hence, probabilities up to two callers…

Q: Suppose that it is known that 45% of eighteen-year-olds in a particular city do not have a driver's…

A:

Q: According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had developed…

A: Given that, According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had…

Q: Previous surveys indicate 33% of households in Barrie regularly recycle household waste through a…

A: Given that  n=10 , p=33%=0.33 , q=1-p=1-0.33=0.67 X~Binomial(n=10,p=0.33) X= Number of blue box

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.