A production line in a factory, assembles laptops. A random sample of assembly time of 49 laptops has been drawn from this factory. Suppose, the population distribution has a mean assembly time of 30 minutes and standard deviation 7 minutes. What is the probability that a sample mean is less than 29 minutes? Select one: a. =P(Z<29) b. =P(Z>-1) c. None of the others d. =P(Z<1) e. =P(Z<-1)

Q: Albert Abbasi, VP of Operations at Ingleside International Bank, is evaluating the service level…

A: For a given random variable, X~N(μ, σ2), the z-score for its sample mean of size "n" is given by,…

Q: Assume that for the population of MBA (Supply Chain Management), the average starting salary is PKR…

A: Points on sampling distribution of the sample mean: If the true population distribution of a random…

Q: the weights of packages of ground beef are normally distributed with mean 1 pound and standard…

A: Given Data Population Mean,μ = 1.0 Population Standard Deviation,σ = 0.1

Q: A company advertises that the batteries it sells is normally distributed with a mean life of 20…

A:

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given that mu = 50 ,s.d =15 p ( 50 &lt;x&lt;70 ) = ?

Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

A:

Q: (a) A factory manufactured PVC pipes with a mean diameter of 3.4 cm, a standard deviation of 1.7 cm…

A:

Q: The population of weights for men attending a local health club is normally distributed with a mean…

A: Given data: The population of weights for men (X) is normally distributed with mean and standard…

Q: Assume the average attendance of a college game is normally distributed with a population mean of…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The Energetic Corporation produces electric light bulbs. When everything is going properly, the…

A: Since you have posted multiple sub-parts of question , we will solve first three sub-parts of…

Q: For a random variable that is normally distributed, with a mean of 80 and standard deviation of…

A:

Q: For a random variable that is normally distributed, with mean of 80 and standard deviation of 10,…

A:

Q: A farmer has a flock of 80 chickens with weights that are normally distributed with a mean of 4.00…

A: Let X be the random variable from normal distribution with mean (μ) = 4.00, standard deviation (σ) =…

Q: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A: μ = 64σ = 2

Q: A manufacturing firm produces resistors with mean and standard deviation of 220 Ω and 11Ω,…

A:

Q: Q2/ The speed of a file transfer from a server on campus to a personal computer at a student's home…

A:

Q: The weights of packages of ground beef are normally distributed with mean 1 pound and standard…

A: Introduction:Denote X as the weight (pound) of a randomly selected package of ground beef. Thus, X…

Q: the sape of the distribution of the time required to get an oil change at  a 10-minute oil change…

A: Answer:  Given,n=40 Mean=11.4 Standard deviation =3.2

Q: 2. The length in days of human pregnancies is known to be normally distributed with a mean of 266…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A random sample of 169 cans of fruit nectar is drawn from among all cans produced in a run. Prior…

A: Given : Mean (µ)=11.22 Standard deviation (σ)=2.14 Sample size (n)=169

Q: airline carriers 300 passengers and has doors with a height of 76 inch. heights of men are normally…

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

Q: let x be a random variable that represents the commute time of teachers in a large urban area. If x…

A:

Q: 3)A study shows in a certain school that the average number of hours a student answers his/her…

A:

Q: A detergent company finds that a family in the country washes an average of 910 kilograms of clothes…

A: Given that: X is normal Distributed with mean µ = 910.0 and standard deviation σ = 85.0 By using…

Q: Suppose that the latest census indicates that for every 10 young people available to work only 4 are…

A: Solution: Let X represent the number of people are employed.  The probability of people are employed…

Q: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A:

Q: b. The average commute to work is 25 minutes. If we assume that commuting times are normally…

A: We have to find given 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: Suppose that the weights of the people in a certain office building are normally distributed, with a…

A: Given  μ=150, σ=20, n=16  Note: This probability value calculated from standard normal distribution…

Q: 3. The average cholesterol content of a certain brand of eggs is 215 milligrams, and the standard…

A: Given mean μ = 215standard deviation σ = 15we need to calculate two parts of probability

Q: The number of pieces of dog food in a one-cup scoop is approximately Normally distributed with a…

A: The probability is the chance of event happening. It value never exceeds 1 and never less than 0.…

Q: The shape of the distribution of the time required to get an oil change at a 15 minute oil change…

A: Here we have μ = 16.2 min and Std (s) = 3.7min

Q: In a manufacturing process, the diameter of steel rods is distributed normally with a mean value of…

A:

Q: A manufacturer of 8-watt LED downlights has past data that shows the lifespan of the downlight is…

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

Q: 1.A study of the amounts of time (in hours) college freshmen study each week found that the mean is…

A:

Q: A manufacturer receives a shipment of 500 spare parts from a supplier who claims that the lengths of…

A:

Q: The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of…

A: Let X be the length of the aluminum coated sheets. X ~ N(μ, σ) Given,  Mean, μ = 30.05 inches…

Q: 2. The average age of a car registered in the Land Transportation Office (LTO) is 10 years, or 120…

A: Solution: Given information: n= 35 Sample size  μ= 120 months Population mean σ= 20 months…

Q: The GPAs of a large population of university students are approximately normally distributed with…

A: Let X denotes the GPA of the students of an university.  Then, X is normally distributed with mean…

Q: The television picture tubes of manufacturer A have a mean lifetime of 6.5 years and a standard…

A:

Q: Assume that the heights of 6000 male students at a university are normally distributed with mean…

A:

Q: In a particular city, the weight of newly born babies is normally distributed with a mean of 3.5 kg…

A:

Q: A farmer harvests several heads of iceberg lettuce. The weight of the heads of lettuce are normally…

A: The weight of the heads of lettuce are normally distributed with a mean weight of 2.2 pounds and a…

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: From the provided information, Mean (µ) = 8.4 hours Standard deviation (σ) = 1.8 hours Let X be a…

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given information: Mean=50 hours and standard deviation=15 hours. That is, μ=50 and σ=15

Q: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A:

Q: In a study of the amount of time to rebuild a transmission, the mean was μ=6.5 hours and the…

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: The birth weight of human infants is normally distributed with a mean of 7.6 poundsand a standard…

A: Solution: Let X be the birth weight of human infants. From the given information, X follows normal…

Q: a) Suppose that the average number of inquiries received by a customer service center of a IT…

A:

Q: The amount of time that a drive-through bank teller spends on a costumer is a random variable with a…

A: Let X be the random variable from normal distribution with mean (μ) = 3.2, standard deviation (σ) =…

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.