In 2001 there were 869 road fatalities in Virginia, according to the Virginia Department of Motor Vehicles. Of these 346, were alcohol-related. A DMV analyst wants to to randomly select several groups of 25 road fatalities for further study. What is the probability that a fatality was alcohol-related?  Find the mean and standard deviation for the number of alcohol-related road fatalities in such groups of 25. Mean:  Standard Deviation:  What is the probability that such a group will have no more than 5 alcohol-related road fatalities?

Q: New York City is the most expensive city in the US for lodging. The mean hotel room rate is $204 per…

A: given datanormal distributionμ = 204σ = 55P(x>225) = ?

Q: Joan's finishing time for the Bolder Boulder 10k race was 1.81 standard deviations faster than the…

A: It is given that the z-score is 1.81.

Q: What proportion of trucks can be expected to travel between 38,000 and 62,000 miles in the year?

A: Normal distribution is also known as the Gaussian distribution . It is widely used to make complex…

Q: Joan’s finishing time for the Bolder Boulder 10K race was 1.76 standard deviations faster than the…

A: Given   x=μ+1.76 σ   ∴z=1.76 ∵1.76 SD  above mean       n=420 women

Q: Ryanair charges a mean base fare of $59. In addition, the airline charges for checking in at the…

A: The population standard deviation of total flight cost is known to be $25. An average $39 per…

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).…

A:

Q: c. Find the p-value. Round to 4 decimals. p-value = d. Make a decision. O Fail to reject the null…

A: Given : Mean : x1 = 46.9x2 = 36.2 standard deviation : σ1 = 12.4σ2 = 15.3 Sample size : n1 = 124n2 =…

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: Harrisburg International Airport records daily weather data. Upon analyzing the average high…

A: GivenMean(μ)=41.1standard deviation(σ)=5.0

Q: The average annual salary for all U.S. teachers is $47,750. Assume that the distribution is normal…

A: GivenMean(μ)=47750standard deviation(σ)=5680

Q: The Bureau of Labor Statistics provides compensation information on and services for various…

A:

Q: Joan’s finishing time for the bolder boulder 10k race was 1.85 standard deviations faster than the…

A:

Q: What is the mean time for athletes to be considered fully prepared? b. Calculate standard deviation…

A: Answer:- Given probability distribution table is,  Using formula,  Mean , E(X) = μ=∑xP(x).…

Q: The average McDonald's restaurant generates $3.6 million in sales each year with a standard…

A: For the MacDonald's restaurant the following information is provided. Average μ=3.6  Standard…

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: An article in the Register stated that students in the state university system take 4.5 years, on…

A: Givensample size(n)=49Mean(x)=5.1standard deviation(s)=1.2significance level(α)=0.01

Q: The average McDonald's restaurant generates $2.3 million in sales each year with a standard…

A: Here, population standard deviation is known, so we can perform a z-test .

Q: A Nielsen Company report states that the mean number of TV sets in a U.S. household is 2.24. Assume…

A: Solution: Given information: n= 85 Sample size  μ= 2.24 Population mean σ=1.2 Population standard…

Q: 3. The heights of 18-year old men are normally distributed with mean 68 inches and standard…

A: "Since you have posted a question with multiple subparts we will provide solutions only to the first…

Q: The weekly salaries of teachers in one state are normally distributed with a mean of $980 and a…

A: Let, X=The weekly salaries of teachers in one state  Given that X is normally distributed with a…

Q: oby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A:

Q: Suppose you read in the newspaper that registered nurses earned an average annual salary of $49,110…

A: Claim :  salary was significantly lower than the $49,110.

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

A: Note: Hey there! Thank you for the question. Although the mean and standard deviation of the…

Q: Please see attached.

A: (a). It is given that:

Q: The Monthly salaries of teachers at Los Angeles Trade Tech are normally distributed with a mean of…

A: Given information: The monthly salaries of teachers at Los Angeles Trade Tech are normally…

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: A survey showed that 75% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: From the provided information, Sample size (n) = 11 75% of adults need correction for their eyesight…

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: A certain video game has 72% chance of sucess. During summer vacation a person plays 12 games a day.…

A: In question, Given that A certain video game has 72% chance of sucess. During summer vacation a…

Q: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24…

A: Mean = 2.24 Standard deviation = 1.3 Sample size = 95

Q: A survey was given to people living in Broward County. The county randomly collected the income…

A: given data  μ = 100000 $σ = 10000 $P(90000<x<110000) = ?

Q: The Real Estate Group NY reports that the mean monthly rent for a one-bedroom apartment without a…

A: Given : Mean (μ) = 2635      (in $)Standard deviation = 499      (in $)Sample size (n) = 98

Q: A runner for team 1 can run a race in 54.6 seconds. Team 1 has running times with a mean of 52.1…

A: given data team 1 x1=54.6μ1=52.1σ1=2.09team 2x2=53.7μ2=51.2σ2=3.53we have to find z score  and and…

Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A:

Q: A housing survey was conducted to determine the price of a typical home in Topanga, CA. The mean…

A: The objective of this question is to find the probability that the mean price of 60 randomly chosen…

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.