The length of time it takes to fill an order at a ABC sandwich shop is normally distributed with a mean of 6 minutes and a standard deviation of 2 minute. What is the probability that the average waiting time for a random sample of 100 customers is between 5.6 and 6 minutes? The length of time it takes to fill an order at a DEF sandwich shop is normally distributed with a mean of 5 minutes and a standard deviation of 2 minute. Suppose the probability that the average waiting time for a random sample of customers between 4.75 and 5 minutes is 0.3413. What is the number of customers in the sample? The length of time it takes to fill an order at a XYZ sandwich shop is normally distributed with a mean of 7 minutes. Suppose the probability that the average waiting time for a random sample of 36 customers between 6.8 and 7.2 minutes is 0.383. What is the standard deviation of the waiting time?

Q: A motorcar industry research study found that the tyre lifespan for economic sedan cars is normally…

A: Solution: Let X be the tyre lifespan for economic sedan car. From the given information, X follows…

Q: manufacturer of light bulbs produces bulbs that last a mean of 950 hours with a standard  deviation…

A: To find the probability that the mean lifetime of a random sample of 10 of these bulbs is less than…

Q: The amount of time that sales managers devote to their jobs per week is normally distributed with a…

A: The amount of time that sales managers devote to their jobs per week is normally distributed with a…

Q: A survey among freshmen at Mesa showed that the number of hours spent preparing for final exams was…

A: Given data,μ=20σ=9P(35<X<43)=?

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean = μ =…

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 8.6…

A: GivenMean(μ)=8.6standard deviation(σ)=1.53sample size(n)=31

Q: The percent of fat calories that a person in a city consumes daily is normally distributed with a…

A:

Q: It has been observed that the net amount of soda in such a can has a normal distribution with a mean…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: The amount of snowfall falling in a certain mountain range is normally distributed with an average…

A: From the provided information, Mean (µ) = 170 inches Standard deviation (σ) = 20 inches X~N (170,…

Q: The starting salaries of individuals with an MBA degree are normally distributed with a mean of…

A:

Q: Suppose that a 1-gallon can of paint covers 513.3 square feet on average with a standard deviation…

A: From the provided information, Mean (µ) = 513.3 square feet Standard deviation (σ) = 31.5 square…

Q: Suppose that the body lengths of adult male crested porcupines in a certain region in Italy are…

A:

Q: The ages of patients undergoing a heart surgery in MJPS Hospital are normally distributed with a…

A: For the given data mu =43.5 ,s.d =8.5 ,x =40 p(x>40) = ?

Q: he weights of toilet paper rolls are normally distributed with a mean of 7 ounces and a standard…

A: mu = 7 s = 0.6

Q: A motorcar industry research study found that the tyre lifespan for economic sedan cars is normally…

A: Given: Mean μ=30,000 S.D σ=4500 n =100 Probability that mean lifespan of the tyres for these 100…

Q: Suppose that the amount of cosmic radiation to which a person is exposed when flying by jet across…

A: It is given that the mean and standard deviation are 4.35 and 0.59, respectively.

Q: An automobile battery manufacturer claims that its midgrade battery has a mean life of 50 months…

A: Given: X~N(μ,σ)μ=50σ=6

Q: tire company measures the tread on newly-produced tires and finds that they are normally distributed…

A:

Q: The number of turns of a pencil sharpener needed to sharpen a brand W pencil is approximately…

A: Answer 1 : approximately 0

Q: A census of the labor force in a large metropolitan area found that the time is takes for people to…

A:

Q: The length of time it takes to groom a dog at Shaggy's Pet Shoppe is normally distributed a mean of…

A: The provided information is  µ=45 σ=10 1.P(X>60)=P(X-µσ>60-4510)=P(z>1.5)=0.0.0668The…

Q: A recent study of teacher salaries in rural areas showed that the average salary was $30,000/year…

A:

Q: ounts of time per workout an athlete uses a stairclimber are normally​ distributed, with a mean of…

A: (a) Given: μ=25, σ=7 The corresponding z-value needed to be computed:  The probability that a…

Q: The reading speed of second grade students in a large city is approximately​ normal, with a mean of…

A:

Q: The amount of time that customers wait in line during peak hours at one bank is normally distributed…

A: Here it is given that, Mean (μ) = 12Standard Deviation (σ) = 2 Let X be a random variable which…

Q: The average starting salary of individuals with a master's degree in statistics is normally…

A:

Q: The medical records of infants delivered at the Kaiser Memorial Hospital show that the infants'…

A:

Q: A new brand of cell phone battery has a mean battery life of 54 hours with a standard deviation of…

A:

Q: The medical records of infants delivered at the Kaiser Memorial hospital show that the…

A:

Q: The time student spends on his/her homework is normally distributed with the mean of 122 minutes and…

A: From the given information, the mean value is 122 minutes and standard of 53. That is,  μ=122σ=53

Q: A report stated that the average number of times a cat returns to its food bowl during the day is…

A: Given information- Population mean, μ = 36 Population standard deviation, σ = 5 Since variables are…

Q: An online food delivery service in metro manila has a mean delivery time of 30 minutes with a…

A: Let X denote the delivery time. Given that X follows N(mean = 30, SD = 5), then Z = (X - mean)/SD…

Q: manufacturer of light bulbs that last a mean of 950 hours with a standard deviation of 120 hours.…

A:

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A: We have given that  Mean = 0.944 Standard deviation = 0.289 Sample size = 47   Note: According to…

Q: The reading speed of second grade students in a large city is approximately​ normal, with a mean of…

A: Here, µ=90, σ=10, n=28.

Q: The distribution of weights of 9 ounce bags of a particular brand of potato chips is approximately…

A: Given Mean=9.12 Standard deviations=0.15

Q: The speed of cars driving on Route 1 is normally distributed with a mean of 60 mph and a standard…

A: It is given that the, The speed of cars is normally distributed with a mean of 60 mph and a standard…

Q: A plant manufactures electric light bulbs with a burning life that is approximately normally…

A:

Q: A small retail store has customers whose ages are normally distributed, with a mean of 37.5 and a…

A:

Q: Suppose the reaction times of teenage drivers are normally distributed with a mean of 0.53 seconds…

A: If a random variable x has a distribution with mean µ and standard deviation σ, then the z-score is…

Q: When the individual weight of a parcel (500 pieces) of oranges was measured, it was observed that…

A: Given, Mean, mu= 200 Standard deviation, sigma= 25 X~N(200,25)  And n= 10/2 = 5  P(X<=150)

Q: The weight of people in a small town in Missouri is known to be normally distributed with a mean of…

A: Mean = 180 Standard deviation = 28 Sample size, n = 40

Q: If we know that the length of time it takes a college student to find a parking spot in the library…

A: It is given that the mean length of time taken by a college student to find a parking spot was 3.5…

Q: A citrus farmer who grows mandarin oranges finds that the diameters of mandarin oranges harvested on…

A: Given information- We have given the diameters of mandarin oranges harvested on his farm follow a…

Q: The term​ "Freshman 15" refers to the claim that college students typically gain 15 lb during their…

A: Given that mean of2.4 lb and a standard deviation of10.8

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A:

Q: A recent survey of the NHL found that the number of goals scored in Hockey *BY A PLAYER* in an 82…

A: From the provided information, Mean (µ) = 42 Standard deviation (σ) = 8 Let X be a random variable…

Q: mean cost of a new Sport Utility Vehicle (SUV) has been found to be $42,500 with a standard…

A: Given that: μ = $ 42500 ? = $ 2500 By using standard normal distribution we solve this problem

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A: Let the amount of nicotine in a certain brand of cigarette is denoted by:  M Therefore mean of M is:…

Q: A supervisor at a local widget making company has been monitoring the output of one of the machines…

A:

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.