Birth weights are distributed normally, with a mean of 3.39kg and a standard deviation of 0.55kg.What is the probability that a randomly selected sample of 40 newborns will have an average weight of greater than 3.37 kg?

Q: A random sample of 14 nurses in a large hospital showed that they worked on average 44.8 hours per…

A: The random variable time follows normal distribution. The sample size is 14. The sample mean is…

Q: The diameter of a brand of tennis balls is approximately normally​ distributed, with a mean of 2.53…

A: Given,sample size(n)=10mean(μ)=2.53standard deviation(σ)=0.04

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.45…

A:

Q: Birthweights are distributed Normally, with a mean of 3.39kg and a standard deviation of 0.55kg.…

A: It is given that the mean is 3.39 kg, the standard deviation is 0.55 kg and the sample size is 40.

Q: Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an…

A: Solution-: Given: \mu=32, \sigma=7.5,n=34 We want to find P(sample mean of 31.1 grams of fat per…

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: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: It is an important fact in statistics . It has got wide applications in all statistical fields .

Q: A research study was conducted to examine if a new antidepressant could lower depression for…

A: As per the question, a researcher wants to examine if a new antidepressant could lower depression…

Q: Cititon Forest contains a population of 297 chupacabra, whose masses have a mean of 40.1 kg and a…

A: Given that.   X~N( μ , ?^2 )   μ=40.1  , ?=8.3  , n=103   Z-score =( x - μ )/?

Q: The mean age that cats get adopted at a shelter is 21.4 months with a standard deviation of 3.6…

A: Normal distribution is also known as the Gaussian distribution . It is widely used in statistics .

Q: Cititon Forest contains a population of 326 chupacabra, whose masses have a mean of 30.2 kg and a…

A: Given that ; N = 326 u = 30.2 kg n = 70 kg ? = 7.4 kg By using standard normal distribution we solve…

Q: The weight of adult male rhesus monkeys is normally distributed, with a mean of 15 pounds and a…

A: We have given that  Mean=mu=15 Standard deviation=sigma=3 X~Normal(mu=15,sigma=3) Find P(x>18.6)

Q: The water content of soil from a borrow site is normally distributed with a mean of 13.2% and a…

A: Given information: The water content of soil from a borrow site is normally distributed with a mean…

Q: In a test, students averaged 16.2 errors with a standard deviation of 4.2 errors. Say a random…

A: Given data  μ = 16.2σ = 4.2n = 49P( x¯ >15) = ? Normal distribution

Q: A plant manufactures part whose lengths are normally distributed with a mean of 16.3 centimeters and…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 16.3 and…

Q: weights of packages shipped by a company are normally distributed with a mean of 32.8lbs and a…

A: Given,mean(μ)=32.8standard deviation(σ)=5.4

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

A: Let X denote the customer ages and it follows normally distribution with a mean of 37.5 and a…

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

A: Given information- Population mean, µ = 68 inches Population standard deviation, σ = 3.3 inches Let…

Q: The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation…

A:

Q: the mean starting salary for nurses is 67,984 dollars nationally. the stndard deviation is…

A: Mean is 67984 dollars Standard deviation is 10391 dollars

Q: The mean age that cats get adopted at a shelter is 21.4 months with a standard deviation of 3.6…

A: Solution: Let X be the age. From the given information, X follows normal distribution with mean…

Q: The weights of the cereal in boxes of Kooky Krunch cereal are normally distributed, with a mean of…

A:

Q: The diameter of a pipe is normally distributed with a mean of 0.4 inch and a standard deviation of…

A: Given data,μ=0.4σ=0.02P(X>0.418)=?

Q: Heights of men in some place of the world are normally distributed with mean 73.2 in and standard…

A: Let "X" be the height of men in inches. Sketch the normal curve and shade the area to the left…

Q: What is the probability that 32 cans of Diet Pepsi will contain, on average, more than 12.18 ounces…

A:

Q: It is estimated that the weight of a box of cereal follows a normal distribution with a mean of 23.8…

A: Solution: Let X be the weight of a box of cereal. From the given information, X follows normal…

Q: person with normal blood pressure has a systolic measurement of 120 mmHg, and a standard deviation…

A:

Q: The number of minutes per week teenagers spend on Tik Tok is normally distributed with a mean of…

A:

Q: fertility rate is the number of births per 1000 women aged 15-44. The mean fertility rate of the 50…

A: According to the given information in this question We need to find the following probability

Q: The time it takes to train a newly hired telephone sales representative is normally distributed with…

A: It is given that, time to train a newly hired telephone sales representative follows normal…

Q: The annual salary for an emergency room nurse is a normally distributed random variable with a mean…

A: Mean()=80000standard deviation()=12000sample size(n)=36

Q: Birthweights are distributed Normally, with a mean of 3.39kg and a standard deviation of 0.55kg.…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: The weight of potato chip bags filled by a machine at a packaging plant is Normally distributed,…

A: Given Mean=15 Standard deviations=0.2

Q: The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation…

A: Given: Sample size = 36 Population mean μ=11.5 Population standard deviation σ=2.7 Consider, X be…

Q: Suppose that an accounting firm does a study to determine the time needed to complete one person's…

A: Given that  An accounting firm does a study to determine the time needed to complete one person's…

Q: Men have sitting heights that are normally distributed with a mean of 36.0 inches and a standard…

A: Mean = 36.0 Standard deviation = 1.4

Q: Body temperatures of adults have normally distributed with a mean of 98.60 °F and a standard…

A: 1. Let X be the body temperature of adults. From the given information, X follows normal…

Q: The annual salary for an emergency room nurse is a normally distributed random variable with a mean…

A: Suppose the random variable x defines the annual salary for an emergency room nurse.

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: Adult male heights are normally distributed with mean 69.43 inches and a standard deviation of 2.25…

A: The random variable height follows normal distribution. The population mean is 69.43. The population…

Q: The life expectancy of a particular brand of tire is normally distributed with a mean of 60,000 and…

A:

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

A:

Q: Based on tests of the Chevrolet Cobalt, the miles per gallon in highway driving are normally…

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

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.