The average age of all employees is 25 years, and the standard deviation of the ages of all employees is 3 years. Suppose 100 employees are randomly selected. What is the probability that the average age for the 100 employees is between 20 and 23 years?

Q: According to a survey, the average height of NBA players is 78 in. with a standard deviation of 7…

A: We have given that,  X is random variable are normally distributed with average or mean (mu) = 78…

Q: The average age of accountants is 53 years, with a standard deviation of 5 years. If an accounting…

A: We have to find probability..

Q: A population has a standard deviation of 16. If a sample of size 64 is selected from this…

A:

Q: a typical adult has an average IQ score of 105 with a standard deviation of 20. If 19 randomly…

A:

Q: what is the probability that the sample mean will be between 350,000 and 365,000?

A: Given that Sample size n = 100 Population mean = 345800 Population SD = 90000

Q: There are 350 dogs at a dog show, who weigh an average of 15 pounds with a standard deviation of 7…

A: Given,sample size(n)=40mean(μ)=15standard deviation(σ)=7

Q: The average public high school has 468 students with a standard deviation of 87. If a public school…

A: Given, mean=μ=468 and standard deviation=σ=87.

Q: There are many firms that belong to the same industry. It is known that there are in average 74…

A:

Q: The average weight of an NFL player is 245.7 pounds with a standard deviation of 34.5 pounds, but…

A: From the provided information, Mean (µ) = 245.7 Standard deviation (σ) = 34.5

Q: The buffet has an average wait line of 45 minutes, with a standard deviation of 15 minutes. If we…

A: Given Data Population Mean,μ = 45.0 Population Standard Deviation,σ = 15.0

Q: Assume that blood pressure readings are normally distributed with a mean of 123 and a population…

A: Solution: Let X be the blood pressure reading. From the given information, X follows normal…

Q: the average age of bank managers is 40 years. assume the variable is normally distributed. if the…

A: The age of manager is normally distributed with mean μ=40 years and standard deviation σ=5 years. To…

Q: Suppose 8% of all people are left-handed.  If 352 people are selected at random, what is the…

A:

Q: According to the Bureau of Labor Statistics, the average number of weeks an individual is unemployed…

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: Assume that the salaries of elementary school teachers are normally distributed with a mean $35,000…

A:

Q: according to the government data the probability that a woman between the age of 25 and 29 was never…

A: Given, Probability that a women between the ages of 25 and 29 was never marries is 40%. i.e. p =…

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

A:

Q: Suppose the average time spent driving for drivers age 20 to 24 is 25 minutes and you randomly…

A: It is given that mean and standard deviation are 25 and 1.5, respectively.By using central limit…

Q: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24…

A: Mean = 2.24 Standard deviation = 1.3 Sample size = 95

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

A:

Q: 2. The average of public jeepneys plying in Cebu is 18 years. Assume that the standard deviation is…

A:

Q: The distribution of heights for women in the United States is approximately normal, with a mean of μ…

A: Where,

Q: The distribution of heights for men in the United States is approximately normal, with a mean of μ =…

A: Given data, μ = 70 inches σ = 3 inches If n=16 P(X>6.1)=? =P(X>73)=?

Q: A new species of rabbit has an average body length of 45mm with a standard deviation of 3mm. In a…

A: Given that the new species of the rabbit has an average body of 45mm, which means the mean is 45mm…

Q: The average age of accountants is 43 years, with a standard deviation of 5 years. If an accounting…

A: From the given information,   Mean = 43 Standard deviation = 5 Sample size = 30

Q: A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly…

A: Given information- Population mean, µ = 105 Population standard deviation, σ = 20 Sample size, n =…

Q: Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and…

A: Solution. Given score follow normal distribution. Mean = 80  Score= 5

Q: Suppose the average age of a Tulane undergraduate is 20 years with a standard deviation of 1.2…

A:

Q: Suppose the heights of students in a class follows normal distribution. The mean is 60 inches and…

A:

Q: 2. The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample…

A: For a random variable X, with mean μ and standard deviation σ , the average of X =1n∑xii=1n =X¯…

Q: Suppose all items from an assembly line are independent and that the probability of any item being…

A:

Q: A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly…

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

Q: Suppose the temperature during the month of June is normally distributed with mean 68 degrees…

A: Answer: - Suppose the temperature during the month of June is normally distributed with…

Q: The average age of a vehicle registered in the United States is 96 months. Assume the standard…

A: Let X be the random variable from normal distribution with average or mean (μ) = 96 months, standard…

Q: Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches…

A: Let "x" be the heights of 18-year-old men. Draw the normal curve and shade the area between…

Q: Suppose the heights of students in a class follows normal distribution. The mean is 60inches and the…

A: Calculate the corresponding Z score as follows: The probability that the data point observed is at…

Q: For healthy individuals, between 18 and 48, the mean heart rate is 60 beats per minute (bpm) with a…

A: Calculating the probability: The heart rates have a mean 60 and standard deviation 10. Let X denotes…

Q: Suppose the heights of students in a class follows normal distribution. The mean is 66 inches and…

A: It is given that the mean is 66 inches and the standard deviation is 5 inches.

Q: Suppose the length of a baseball game is 175.9 min with a standard deviation of 27.0 min. For a…

A:

Q: The average age of all employees is 25 years, and the standard deviation of the ages of all…

A: Given Data Population Mean,μ = 25.0 Population Standard Deviation,σ = 3.0 sample…

Q: Suppose that the mean daily viewing time of television is 8.35 hours per household. Use a normal…

A: a. Given that the mean daily viewing time of television is 8.35 hours and standard deviation of 2.5…

Q: The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample of…

A:

Q: The standard deviation of monthly rents paid by students in a particular city is assumed to be $ 40.…

A: Given: Standard deviation of monthly rent paid by students, σ=40.            Let X denotes the…

Q: Suppose a set of 100 random numbers is normally distributed, with a mean of 50 and standard…

A: suppose a set of random numbers is normally distributed, with a mean of 50 and standard deviation 2.…

Q: 2. The probability that a package is delivered on time is 0.97. If 500 randomly selected packages…

A: Givenprobability that package delivered on time (p)=0.97sample size(n)=500

Q: Suppose that the average outstanding credit card balance for young professionals is 11,200 with a…

A: GIVEN DATA, μ=11200σ=2600If n=150P(X<12300)=?

Q: A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. the…

A: From the provided information, Mean (µ) = 15.8 Standard deviation (σ) = 0.6 X~N (15.8, 0.6) Here X…

Q: According to the Department of Education, the time college students spend on their cell phones daily…

A: GivenMean(μ)=270standard deviation(σ)=75

Q: a distribution with a mean of 100 and a standard deviation of 15, what is the probability that a…

A: