The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard deviation of $110. a. W hat is the probability that a domestic airfare is $550 or more? b. W hat is the probability that a domestic airfare is $250 or less? c. W hat is the probability that a domestic airfare is between $300 and $500? d. W hat is the cost for the 3% highest domestic airfares?

Q: What probability falls within one standard deviation of the mean?

A: It is given that the statement about to the probability falls within one standard deviation of the…

Q: A business school dean in Ohio wants to know if graduates who completed an internship during their…

A: Sample size = n = 1500 Sample mean = m = 50,970 Sample SD = s = 12,976  The average alumni who…

Q: CNNBC recently reported that the mean annual cost of auto insurance is $962. Assume the standard…

A: Given information: The mean annual cost of auto insurance is $962. The standard deviation is $190.…

Q: The monthly utility bills in a city are normally distributed with a mean of $121 and a standard…

A: Given : The monthly utility bills in a city are normally distributed with a mean of $121 and a…

Q: Explain in detail what a normal probability plot is and how it is used to assess the normality of a…

A: Normal probability plot:The plot for the observed values of a variable versus the normal scores is…

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7000 and…

A:

Q: 5. According to the Boston Globe in 2012, a typical college student graduated with $27,200 of debt.…

A: The mean is $27,200 and the standard deviation is $25,000.

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: When parking a car in a downtown parking lot, drivers pay according to the number of hours or…

A: Standard deviations=σ=2.8532 k=3.25

Q: LightCastle Partners, a Bangladeshi business management consultant employs a large number of data…

A:

Q: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in North…

A: Let X be the price of a gallon of regular, unleaded gas across gas stations in North Carolina is…

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: Full time Ph.D. students receive an average of $13,537 per year. If the average salaries are…

A: Introduction: Define X as the random variable of interest here, which denotes the salary of the…

Q: The average sales price of a single-family house in the United States is $235,000. You randomly…

A: Given, Mean sales price of family in US is $2,35,000 Standard deviation is $50,000 I.e.,…

Q: Suppose the probability a patient will recover from a disease following medication is 0.7. In a…

A: Given : the probability a patient will recover from a disease following medication is 0.7.  In a…

Q: The average credit card debt for college seniors is $3262. If the debt is normally distributed with…

A: Let X be the random variable from normal distribution with mean (μ) = $3262 and standard deviation…

Q: The sales of a salesman average $500 with a standard deviation of $15.2. He gets a $100 commission…

A: The sales of a salesman average $500 with a standard deviation of $15.2. He gets a $100 commission…

Q: Automobile repair costs continue to rise with the average cost now at $367 per repair. Assume that…

A: Table and R command has utilized to calculate the probability.

Q: The amount that people pay for their cellphone service is normally distributed with a mean of $136…

A:

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7200 and…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Consumers spend an average of Php2,100 per week in cash without being aware of where it goes. Assume…

A: Given data consumers spend an average of php2100 per week in cash the standard deviation is php500…

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: 2. Fill in the blanks: A standardized variable always has a mean of O and a standard deviation of…

A: 2. A standardized variable is always has mean 0 and standard deviation of 1.

Q: 2. Automobile Repair Costs. Automobile repair costs continue to rise with the average cost now at…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: The ACT math scores of a particular high school in New Jersey are approximately normally…

A: Given data, σ=100P(200<X<800)=0.997By using emperical formula99.7% of data lies within μ-3σ…

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: According to the Centers of Disease Control and Prevention (CDC), the aging of the U.S. population…

A: GivenAn average person makes four visits a year to doctor's offices and hospitalsλ=412        i.e.,…

Q: According to BusinessWeek, 44% of advertisers claim they have been a victim of internet click fraud.…

A: The mean is, μ=np=120×0.44=52.8 The mean is 52.8. The standard deviation is,…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: The electric bills for all households in a large city have the normal distribution with a mean of…

A:

Q: National park services, a bureau of the US government responsible for park management, is interested…

A: For current year: The mean can be obtained as: Thus, the mean is 74.56. Arranging the data set into…

Q: The average amount customer spend yearly at a local grocery store is $635.55 .  Assume the variable…

A: Mean(µ) = $635.55Standard deviations (σ) = $94.41X ~ N (µ, σ )= N(635.55,94.41)

Q: rice of a single-family house in the U.S. is $235,500. you randomly select 12 single family houses.…

A: the average sales price of a single-family house in the U.S. is $235,500. you randomly select 12…

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.