A car service shop services a vehicle with an average of 15 minutes and standard deviation of 2 minutes. Assuming the length of time is normally distributed, a) what is the probability that you will get your car serviced in more than 18 minutes? b) what is the probability that you will get your car serviced in less than 14 minutes? c) how long it will take for the middle 70% of customers to get their car serviced

Q: A study indicates that 18- to 24-year olds spend a mean of 145 minutes watching video on their…

A: given data normal distributionμ = 145 minutesσ = 20 minutes

Q: Medical research has concluded that people experience a common cold roughly two times per year.…

A: The mean of the normal distribution, The standard deviation of the distribution,

Q: The average price for a gallon of gasoline in the United States is $3.76 and in Russia it is $3.39.…

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: According to Nielsen Media Research 30% of televisions are tuned in to the NFL Monday Night Football…

A: Note: Thanks for posting the question, in subparts (b) and (c), “exactly 5 or the 15 televisions” is…

Q: The time that people stand in the waiting line at a particular fast food restaurant is normally…

A:

Q: Full-time college students report spending a mean of 29 hours per week on academic​ activities, both…

A: We have given that,  Let X be the random variable from normal distribution with mean (x̄) = 29,…

Q: builtrite has calculated average weekly daily sales to be 80000 with a standard deviation of 12000.…

A: Mean()=80000standard deviation()=12000 one store manager made a bet with another store manager that…

Q: Service time for a customer coming through a checkout counter in a retail store is a random variable…

A: GivenMean(μ1)=4.0Mean(μ2)=4.0standard deviation(σ1)=2.5standard deviation(σ2)=2.5sample…

Q: Ava's morning routine is normally distributed and independent. She has been tracking her time from…

A: Let X and Y are the first and second mornings. It is given that X and Y are independent and…

Q: The average number of mice in a 5-acre rice field is estimated to be 80. Find the probability that a…

A: Given that  The average number of mice in a 5-acre rice field is estimated to be 80. Find the…

Q: estaurant in Ohio, the number of minutes that diners spend at the table has a major impact on the…

A: X~N( μ , ?)μ=89 , ?=17Z-score =( x - μ )/?

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: 80% of beans seeds sprout. Three seeds were planted. Find the distribution of the variable X number…

A: Given : n = 3 P = 0.80 q = 1 - p     = 1 - 0.80 = 0.20

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: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

A:

Q: find the mean and standard deviation of the number of heads obtain

A: Let q be the probability of obtaining tail and p be the probability of obtaining head. Probability…

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: 1) The time until recharge for a battery in a smartphone is normally distributed with a mean of 250…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: se a normal approximation to find the probability of the indicated number of voters. In this​ case,…

A:

Q: Recent report in Times showed a typical family of four spends $490 per month on food with a mean of…

A:

Q: The average number of dropouts for a school district has been 300 per year with a standard deviation…

A:

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: The mean is 120 minutes and the standard deviation is 20 minutes.

Q: A sniper hits a target 80% of the time. He fires five shots at the target. Find  A. Probability…

A: Given problem is binomial distribution Let X: No. of hits n=No. of shots at the target=5 p=prob. of…

Q: A line waiting for tickets to an event has a normal distribution and the mean time is 23 minutes.…

A: Population mean, μ=23 Population sd, σ=4

Q: Service time for a customer coming through a checkout counter in a retail store is a random variable…

A:

Q: An executive drives from her home to her office in the city. The driving times are normally…

A: Given, Driving time normally distributed with mean 35 and standard deviation 8 minutes.

Q: The Australian Emergency department reports that the average time it takes to respond to an…

A:

Q: Suppose that the ages of all MIT students are normally distributed with mean 24.01 yrs and s.d. 5.31…

A: Given,mean(μ)=24.01standard deviation(σ)=5.31

Q: ortion of firms will earn a return between 4% and 8%? B   To the nearest percent find the…

A: given: mean (μ)= 7.5 standard deviation(σ)=2.5

Q: The finish times for marathon runners during a race are normally distributed with a mean of 195…

A: given data  normal distributionμ = 195 minutesσ = 25 minutesP(x<180 minutes) = ?

Q: daily revenue of a computer repair shop is known to be normally distributed with a mean of $7129 and…

A: Given,Mean, μ = 7129Standard deviation, σ = 1139Sample size, n = 35Let X be a random variable…

Q: On average, TV crash after 109,000 hours of continuous use. Although the time for the TV to crash is…

A: From the provided information, On average, TV crash after 109000 hours of continuous use that is…

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A: Mean()=57standard deviation()=3.5

Q: A personal computer is used for office work at home, research, communication, personal finances,…

A:

Q: A report claimed that children between the ages of 2 and 5 watch an average of 25 hours of…

A: Given, Mean = 25 Standard deviation = 3 Sample size = 40   The objective is to find the probability…

Q: Find the probability that one selected subcomponent is longer than 121 cm.   Probability =  B.…

A: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

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.