The Information Systems Audit and Control Association surveyed office workers tolearn about the anticipated usage of office computers for personal holiday shopping (USatoday, November 11, 2009). Assume that the number of hours a worker spends doingholiday shopping on an office computer follows an exponential distribution.a. The study reported that there is a .53 probability that a worker uses an office computerfor holiday shopping 5 hours or less. Is the mean time spent using an office computerfor holiday shopping closest to 5.8, 6.2, 6.6, or 7 hours?b. Using the mean time from part (a), what is the probability that a worker uses an officecomputer for holiday shopping more than 10 hours?

Q: The time that elapses between failures of an essential piece of equipment is important in deciding…

A: Exponential Distribution: A continuous random variable X is said to follow Exponential distribution…

Q: The quality control manager of​ Marilyn's biscuits is inspecting a batch of​ chocolate-chip biscuits…

A:

Q: According to FBI data 12% are cleared. What is the probability that the detective clears five…

A: Binomial distribution : A Binomial is a type of distribution which has two possible outcomes. i.e.,…

Q: In a survey of a group of men, the heights in the 20, 29 age group were normally distributed with a…

A:

Q: In the past, a company used to produce 40 tons of a certain food per day on average. Now, using a…

A: Given: n= 25.0 ,x̄= 45.0 ,s= 5.0 µ= 40.0

Q: The bank of America (BOA) issues Visa and Mater Card credit cards. It is known that the balances on…

A: The mean is 789 and the standard deviation is 135.

Q: Georgia residents spent an average of $470 on the lottery in 2010, or 1% of their personal income…

A: Given: Population mean amount spentx¯=$470 Population standard deviation σ=$50 Sample size of…

Q: According to estimates, 0.3 percent of residents in a given city own dogs. Calculate the likelihood…

A: The question is about discrete prob. distribution Given : Prob. that residents in a city own a dog (…

Q: The average monthly grocery bill for an individual is normally distributed with a mean of $85 and a…

A: Solution: Let X be the average monthly grocery bill for an individual is normally distributed with…

Q: An ice-cream flavour survey of 720 people revealed that 300 people liked green tea, 260 people liked…

A: As per our guidelines we are suppose to answer only one question.Let G= People liked green…

Q: Assume that 15% of 14 year olds believe in spending their money as opposed to saving it. a) Find…

A: Let, X=the number of 14 year old who believes in spending their money as opposed to saving…

Q: A courier company that operates in the Tijuana metropolitan area takes an average of 36 minutes to…

A: Answer: From the given data, Let X denotes delivery time of a courier company that operates in the…

Q: mpany chaiges $227 Iul a $30,C ice policy 1or a 30-year the year is 0.9969. Assume that the company…

A:

Q: what is the probability that exactly 3 small businesses will fail during a given month (

A: Let X denote the number of small businesses failures in a month. It is given that Mean number of…

Q: Given that the mean weight of schoolchildren's book bags is 17.5 pounds, with a standard variation…

A: We have given that Population mean = 17.5 Standard deviation = 2.2 Sample size n =30

Q: credit card company monitors cardholder transaction habits to detect any unusual activity. suppose…

A:

Q: The following data represent the number of drivers involved in a fatal crash in 2016 in various…

A: Data about number of fatal crash in 2016 has been provided.Probability needs to be calculated for a…

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: A recent survey reported that 47​% of​ 18- to​ 29-year-olds in a certain country own tablets. Use…

A:

Q: If the mean time is between unscheduled maintained of lcd displays in a hospital scan facility is…

A: We have given that λ = 1/4000 Let X is a random variable shows the time ofunscheduled maintenance.…

Q: In a country, a day can be either rainy or sunny. The probability of a day being rainy is 40.0% .…

A: In question, Given that In a country, a day can be either rainy or sunny. The probability of a day…

Q: A recent study found that 57% of workers between the ages of 20-29 cash out their retirement…

A: Given, Probability of success = p = 0.57 q = 1-p = 1-0.57 = 0.43 Sample size = n = 14 Here we use…

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: customer service representative must spend different amounts of time with each customer to resolve…

A: Let x be the random variable denotes that the amount of spending time. The amount of time spent with…

Q: 68.7% of the population have brown eyes. A convention has 6000 people in attendance. Find the mean…

A: Given that - 68.7% of the population have brown eyes. A convention has 6000 people in attendance.

Q: The lifetime (years) of a television power adapter can be considered to follow a Weibull…

A: We have given that parameter for weibull distribution a = 15.0 and  b = 1.59

Q: A Soft drink machine outputs a mean of 25 ounces per elip. The machines output is normally, With a…

A: Given that: Population mean, μ=25 Population standard deviation, σ=4

Q: In deciding how many customer service representatives to hire and in planning their schedules, it is…

A: Answer:- Given,The repair times have approximately an exponential distribution with a mean (μ) of 72…

Q: The service time for customers coming through a checkout counter has mean 51.4 seconds and standard…

A: Given: Service time = X Mean of X = 51.4 sec standard deviation of X = 6.8 sec n = 64 sample mean =…

Q: What is the probability that a randomly selected Visa card issued by this bank has a balance between…

A: Let X represents the  balances on all these Visa cards. Given that C follows N(mean = 840, SD = 260)…

Q: When studying radioactive material, a nuclear engineer found that over 365 days, 1,000,000…

A: Given that: Number of atoms decayed during 365 days = 24927 Total number of days = 365

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A: let  denotes the mean lifetime of computersThis follows the normal…

Q: In deciding how many customer service representatives to hire and in planning their schedules, it is…

A: Given,the mean of an exponential distribution is 42 minutes.f(x)=142e-x42        ;  x≥0

Q: The quality control manager of Green Bulbs Inc. is inspecting a batch of energy saving compact…

A: The provided information is as follows:The mean number of bad bulb per shift is .

Q: The quality control manager of Marilyn's biscuits is inspecting a batch of chocolate-chip biscuits…

A: As per our guidelines we are suppose to answer only three sub parts . Given,mean no.of chip parts…

Q: When studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000…

A: The  studying radioactive​ material found that 25,575 atoms decayed during 365 days. That is,…

Q: An auditor for Health Maintenance Services of Georgia reports 40 percent of policyholders 55 years…

A: Given data  P(submit claim last year) =p=0.40 Sample size (n) =  20 X =  No. pf policy holders…

Q: The useful life of an electrical component is exponentially distributed with a mean of 4,000 hours.…

A: Given : An electrical component is exponentially distributed with  Mean = 4000 Exponential Dist. :…

Q: The 2012 National Survey on Drug Use and Health estimated that 25% of canadians agd 12 or over…

A: The odds in favor of event A is P(A)/(1 - P(A)).

Q: 4. The time between calls to a plumbing supply business is exponentially distributed with a mean…

A: The mean time is 15 minutes. Therefore the mean rate is 115≈0.067 calls per minute The function is…

Q: Georgia residents spent an average of $470 on the lottery in 2010, or 1% of their personal income…

A:

Q: Based on a poll , among adults who regret getting tattoos , 27 % say that they were too young when…

A: Let X be the number of the adults say that they were too young to get tattoos which follows binomial…

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.