A detergent company finds that a family in the country washes an average of 910 kilograms of clothes each year. If the population standard deviation is 85 kilograms, find the probability that the mean of randomly selected sample of 50 families of four will be between 880 kilograms and 890 kilograms

Q: Suppose that in a certain Senior High School the average height of male students is 155.9 cm with…

A: GivenMean(μ)=155.9standard deviation(σ)=20.4sample size(n)=40

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.2 inches,…

A: Given information Population Mean (µ) = 9.2 inches Standard Deviation(σ) = 0.7 inches Sample size n…

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: normally distributed length, with a mean of 14.9 inches, and standard deviation of 3.1 inches. If…

A: Hi! Thank you for the question, as per the honor code, we are entitled to solve one question at a…

Q: Assume that the blood pressure data is normally distributed with a mean of 70.2 and a standard…

A: The variable x¯ is defined as the mean blood pressure levels. The sample size is 16, mean is 70.2,…

Q: The average time for a courier to travel from Manila to Pampanga is 200 minutes, and the standard…

A: given that  mean (μ) =200sd (σ) = 10

Q: In a tech company, the time it takes for 1 worker to build a PC is a random variable with an AVERAGE…

A:

Q: Assume that the variable is normally distributed, the average time it takes a group of senior high…

A: The normal distribution  in the center is generally denser and basically less dense at tails. There…

Q: A population has a mean of 200 and a standard deviation of 25. A sample of 64 observations will be…

A: We have to find out given probabiity..

Q: A quart of Parker's milk contains a mean of 42 grams of butterfat, with a standard deviation of 2.5…

A:

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 14.9…

A: As per the Bartleby guideline expert have to answer the first question only. Please submit other…

Q: Suppose that from the past experience a professor knows that the test score of a student taking his…

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A: Given that, mean = 400 standard deviation =  24 n = 144

Q: Suppose the scores, on a college entrance examination are normally distributed with a mean of 1000…

A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

Q: From past experience, a professor knows that the test score of a student taking her final…

A: Given that the mean is 75 and variance is 25 That is, μ=75σ=25=5

Q: A researcher wishes to estimate the average height of men for a certain region of the country. If…

A: Probability is the measure determine the likelihood of an event. Event is the outcome of an…

Q: An electronic company in Laguna manufactures resistors that have a mean resistance of 120 ohms and a…

A: The known values are, μ=120,σ=13,n=40 The mean and standard deviation of sampling distribution of…

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

A: We have given that,  Let X be the random variable from normal distribution with mean (x̄) = 910 and…

Q: If a continous random variable, x, is normally distributed with a mean of 100 and a standard…

A: GivenMean(μ)=100standard deviation(σ)=15

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.5…

A: We know that if; Y~Binomial(n,p)Then the expected value of Y is;E(Y)=npand the standard deviation of…

Q: Suppose the horses in a large stable have a mean weight of 1354 lbs and a standard deviation of 98.…

A:

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A:

Q: The heights of men in a city are normally distributed with mean 171 cm and SD 7 cm, while the…

A:

Q: An electrical firm manufactures incandescent light bulbs that have a length of life (in hours) that…

A:

Q: furnace bills are normally distributed.  With a mean of 273 and an SD of 30.  If 144 bills are…

A: Let M denote the mean of sample of n = 144 bills. Then M follows N(mean = 273, SD = 30/√(144) = 2.5)…

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.3…

A: Given that  The probability that a person exercises and eats well has a heart attack is predicted to…

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: In a health club, research shows that on average, patrons spend an average of 46.2 minutes on the…

A:

Q: If X is a random variable with mean 5 and standard deviation 3, then the mean of the random variable…

A: The random variable is X.

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.2 inches,…

A: The distribution of length of items is N(µ=9.2 inches, σ=1.6 inches).

Q: If the mean and the standard deviation of a continuous random variable that is normally distributed…

A: Solution

Q: An automobile insurer has found that repair claims are Normally distributed with a mean of $620 and…

A: We want to find the probability by using standard normal distribution table.

Q: An airliner carries 350 passengers and has doors with a height of 72 in. Heights of men are normally…

A: From the given information, let X be the men passengers height. Number of men passengers n = 175.…

Q: The weight of a leatherback turtle is normally distributed with mean 760 pounds and standard…

A: Given,mean(μ)=760standard deviation(σ)=98

Q: In a recent study, the Centers for disease Control and prevention reported that diastolic blood…

A:

Q: Suppose that chemistry exam scores are normally distributed with a mean of 24 and a standard…

A: Let X denote exam scores. Given that X follows N(mean = 24, SD = 4)

Q: Suppose the scores, x, on a college entrance examination are normally distributed with a mean of…

A: Solution: Let X be the score on a college entrance examination. From the given information, X…

Q: The owner of a fast-food restaurant knows that, on average, 2.4 cars (customers) use the…

A:

Q: A study shows that children watched television by an average of 48 hours per week with a standard…

A: Let X : Children watched television with Mean(μ)=48 Standard deviation(σ)=12 Sample size (n)=100

Q: The weights of a population of barrels are normally distributed with a mean of 45.0 lb and a…

A: From the provided information, Mean (µ) = 45.0 lb Standard deviation (σ) = 7.9 lb X~N (45, 7.9) Let…

Q: Suppose the scores, X, on a college entrance examination are normally distributed with a mean of…

A:

Q: Suppose x is a normally distributed random variable with a mean of 12 and a standard deviation of 3.…

A: Given,      Meanμ=12      Standard deviationσ=3

Q: Suppose that the average height of men in the United States is approximately normally distributed…

A: Given, Suppose that the average height of men in the United States is approximately…

Q: The mean height of 15-year-old boys (in em) is 175 and the variance is 64. For girls, the mean is…

A: As given that : Mean for height of boys: X1=175 And variance : σ12=64 Mean for height of girls:…

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.6…

A: It is given that n=19 and p=0.6.

Q: horses in a large stable have a mean weight of 1354 lbs, and a variance of 9604. What is the…

A: Suppose the horses in large stable have a mean weight of 1354lbs and variance of 9604. X~N (µ=1354,…

Q: The scores in a large Algebra class are normally distributed with a mean of 65 and a standard…

A:

Q: If a continous random variable, x, is normally distributed with a mean of 100 and a standard…

A: Given : X is normally distributed with a mean of 100 and a standard deviation of 15.

Q: A city temperature is modeled as a normal random variable with mean and standard deviation both…

A: given data,  Mean (μ) = 10  S.D(σ) =10Let X be normally distributed random variable P(X≤15) = ?

Q: At a large manufacturing company the mean age of workers is 37 years, and the standard deviation is…

A: When the given sample size is more, that means 30 are more than 30, then we use a large sample test.…