The average repair cost of a microwave oven is 55$, with a standard deviation of 8$. The costs are normally distributed. If 4 ovens are repaired, find the probability that the mean of the repair bills will be greater than 60$.

Q: Assume that women's heights are normally distrubuted with a mean of 63.6 inches and a standard…

A: From the given information, the mean is 63.6 and the standard deviation is 2.5.

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A: We want to find given probability for given questions

Q: The average age of accountants is 53 years, with a standard deviation of 5 years. If an accounting…

A: We have to find probability..

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A:

Q: Furnace repair bills are normally distributed with a mean of 264 dollars and a standard deviation of…

A: Let X denote the cost of furnace repair bills. Given that X follows Normal(mean = 264, SD = 30)

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A:

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: P(X>30)=1-Pz<30-311045=1-P(z<-0.67)=1-0.2514=0.7486

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: The given data are: Mean, μ=31 minutes Standard deviation, σ=5 minutes n=40 For sample average, z is…

Q: A student finds that the average price of a movie ticket in Washington is $12.25 and that the…

A: From the provided information, Mean (µ) = $12.25 Standard deviation (σ) = $2 Let X be a random…

Q: The average resident of Metro City produces 770 pounds of solid waste each year, and the standard…

A: We have to find probability that randomly selected person will produce more than 1000 pound wastwm

Q: A researcher showed the mean of weights of college football players to be 200 pounds with a standard…

A:

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: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: P(X<30)=Pz<30-28540=P(z<2.53)=0.9943

Q: The distribution of the number of viewers for the American idol television show follows a normal…

A: a) Probability that next week show will have between 30 and 34 million viewers: The probability that…

Q: Water use per person is reported as 70 gallons per week, with a standard deviation of 10 gallons If…

A: Given that, μ=70,σ=10,n=25 (a) The probability of their sample mean being greater than 75 gallons…

Q: The average number of acres burned by forest and range fires in a large New Mexico county is 4,300…

A: GivenMean(μ)=4300standard deviation(σ)=750

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: The average Pagibig salary loan for RFS Pharmacy Inc employees is 23,000. If the debt is normally…

A: The average Pagibig salary loan for RFS pharmacy Inc employees is 23000. If the debt is normally…

Q: THE SICK-LEAVE TIME OF EMPLOYEES IN A FIRM IN A MONTH IS NORMALLY WITH A MEAN OF 100 HOURS AND A…

A:

Q: A major application of analytics in marketing is determining customer retention. Suppose that the…

A: Given The customer leaving for another carrier from one month to the next is 0.14

Q: According to a Sallie Mae survey and credit bureau data, in 2008, college students carried an…

A:

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Given that, μ=28,σ=5 and n=40 The mean and standard deviation of the sample mean is,

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: A study indicates that the weights of adults are normally distributed with a mean ? of 140 lbs and a…

A: 1.Let X be the weight of adults. X follows normal distribution that has mean µ = 140 and the…

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

A: Given Information: Mean μ=196 Standard deviation σ=22 Let X denote the number of red meat a person…

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A: Here, mean is $100 and standard deviation is $14.

Q: The heights of students are normally distributed with a mean of 59 inches and a standard deviation…

A:

Q: The average hourly sale of a certain ride in an amusement park is P148.75/hr with a standard…

A: Given information- Population Mean µ = P148.75/hr Standard deviation (σ) = P75.76 Let X be the…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A:

Q: The average hourly wage for manufacturing workers in the United States is $20.89 per hour, With a…

A: Give that  The hourly wage for manufacturing workers in united states is $20.89 μ = 20.89 Standard…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A: (a) Let x be the monthly utility bills in a city which follows normal distribution with mean 100,…

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: The mean is μ=24 and the standard deviation σ=3.8 The office coffee time is 8:50 to 9:00 AM. So he…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A: X follows a Normal distribution with mean = 100 and S.D = 13 Then z=(x-mean)/SD = (x-100)/13…

Q: If the mean is two, the standard deviation is one, and a value for a normally distributed random…

A:

Q: The sizes of houses in Kenton County are normally distributed with a mean of 1369 square feet with a…

A: From the given information, the mean and standard deviation are 1,369 and 171.

Q: The grades of a statistics midterm are normally distributed with a mean of 79 and a standard…

A: Normal distributionμ=79σ=3.5pgrade between74 and 80=?

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A:

Q: The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words…

A: Given mean speed of 125 words per minute and a standard deviation of 24

Q: assume that cans of coke are filled so that the actual amounts have a mean of 12 oz and a standard…

A:

Q: In a dorm, the weights of the students are normally distributed with mean 175 lbs and standard…

A:

Q: The number of calories in a certain dessert is normally distributed with a mean of 210 and a…

A: We have to find the probability that the dessert one selects will contain between 185 and 216.

Q: . If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A:

Q: The life of an electronic transistor is normally distributed, with a mean of 500 hours and a…

A:

Q: Given a sample with a mean of 151 and a standard deviation of 27, find the probability that a…

A: Given :  sample with mean of 151 and standard deviation of 27 we have to find P(X > 158 )

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: Here, µ = 72, σ = 9.

Q: he probability that a football game will go into overtime is 12%. In 200 randomly selected football…

A: It is given than n=200 and p =0.12.

Q: The heights of 18 year old men are normally distributed with a mean of 67 inches and a standard…

A: Given distribution is normally distributed with mean 67 and standard deviation 3 x~N(μ=67, σ=3)

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.