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

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

A:

Q: The weight of arctic polar bears is normally distributed with a mean of 980 pounds and a standard…

A: we have given that, the weight of arctic polar is normally distributed with mean (mu)= 980, and…

Q: The average age of a vehicle registered in Country A is 8 years, or 96 months. Assume the standard…

A:

Q: In 1999, the murder rates (per 100000) for the 50 states and the District of Columbia had a mean of…

A: Given mean is 5.9 and standard deviation 6.3 sample size is 5

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: Suppose​ 18% of​ movie-goers say that horror is their favorite movie genre. If a random sample of…

A: Obtain the mean number of movie-goers that prefer horror movie genre. The mean number of movie-goers…

Q: a random sample is selected from a population with a standard deviation of 18. On average, how much…

A: We have to find standard error for given data.

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

A: Given,sample size(n)=100mean(μ)=25standard deviation(σ)=3

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: In Hidalgo County, Texas, 80% of those eligible for jury duty were Mexican- Americans. Assuming that…

A: Obtain the mean for the numbers of Mexican-Americans. The mean for the numbers of Mexican-Americans…

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

A:

Q: 2. Suppose the wait times at doctor's office are normally distributed, with mean of 30 minutes and a…

A: Let, X= wait time in office μ=mean=30 σ= sd=10

Q: If the average low temperature of a winter month in Rochester, NY, is 21∘ and the standard deviation…

A:

Q: A population has a mean of 200, a standard deviation of 30, and is normally distributed. A sample of…

A: We want to find the probability  Note: This probability value calculated from standard normal…

Q: What is the Mean deviation of the numbers 0.5, 0.8, 1.1, 0.9 and 0.6

A: The data is given by 0.5, 0.8, 1.1, 0.9, 0.6 And the mean of these numbers is Mean = (0.5 + 0.8 +…

Q: for a population with a standard deviation of 5 and mean of 48, draw a bell shaped curve, marking…

A: Given data, Mean=48 sd=5 Draw a bell shaped curve?

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

A:

Q: The record of 35 randomly selected participants of a marathon was selected. The mean time it takes…

A:

Q: In a normal distribution with mean 375 and standard deviation 48, how large a sample must be taken…

A: It is an important part of statistics. It is widely used.

Q: ording to one pollster, 47% of children are afraid of the dark. Suppose that a sample of size 20 is…

A: Consider "p" be the true proportion which represents the proportion of children that are afraid of…

Q: A computer program has a bug that causes it to fail once in every thousand runs, on average. In an…

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Q: The IQs of 600 applicants of a certain college are approximately normally distributed with a mean of…

A:

Q: The board of examiners that administers the real estate broker's examination in a certain state…

A: Given, Mean = μ=440SD=σ=72Probability = 0.1

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 random sample is selected from a population with a standard deviation of  56. On average, how much…

A:

Q: Suppose a waitress keeps track of her tips, as a percentage of the bill, for a random sample of 60…

A:

Q: 20% of drivers don't use turn signals, observed of 140 cars.  What is the standard deviation of…

A: Given that 20% of drivers don't turn signals and there are 140 cars. That is, p=0.20 and n=140

Q: According to police sources, a car with a certain protection system will be recovered 90% of the…

A: Given problem is a binomial distribution with:

Q: A population has a standard deviation of σ = 24. a.  On average, how much difference should exist…

A: Given : A population standard deviation : σ=24. The average distance of sample mean from population…

Q: Suppose 36% of movie goers say comedy is their favorite genre. If a random sample of 120 movie goers…

A: Obtain the mean number of movie goers that prefer comedy. The mean number of movie goers that prefer…

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

A:

Q: The board of examiners that administers the real estate brokerʹs examination in a certain state…

A: According to the provided information, Mean = 494 Standard deviation = 72

Q: The average age of lawyers is 43.6 years, with a standard deviation of 5.1 years. If a law firm…

A: Here the mean weight of lawyers follows Normal with mean=43.6 and standard deviation=5.1, also the…

Q: There is an 85% chance that a randomly selected person will take their own re-usable bags to the…

A:

Q: If 100 women are randomly selected , find the probability that they have a mean height greater than…

A: Given:μ=63.6σ=2.5n=100

Q: Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of…

A: Sampling Distribution of a Normal Variable :  Given a random variable X. Suppose that the…

Q: A new species of dragonfly has an approximate body length of 45 mm with a standard deviation of 3…

A:

Q: There are 500 employees in Company ABC of which the mean salary per day is Php385.00 with a standard…

A: Given: The number of employees are N=500. The mean salary per day of employees is μ=385. The…

Q: A politician takes an SRS of 75 citizens in a county to see what proportion of citizens sampled are…

A: A politician takes an SRS of 75 citizens in a county to see what proportion of with their standard…

Q: The IQs of 600 applicants of a certain college are normally distributed with a mean of 115 and a…

A: The random variable IQ follows normal distribution. The population mean is 115. The population…

Q: What is the standard deviation of the commuting time?

A: The standard deviation formula for uniform distribution is, σ=b-a12 The commuting time on a…

Q: At their​ inauguration, the ages of the first six​ (out of a current number of​ 45) presidents of a…

A: First we will find the sample standard deviation the steps are as follows1) Step 1: Find the mean of…

Q: on the test was 450 and the standard deviation was 50.  If the board wants to set the passing scores…

A: According to the sum, the board of examiners that administers the real estate broker’s examination…

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: A population has a mean μ=40 and a standard deviation σ=4. What is the standard deviation of the…

A:

Q: A department store has determined that 65% of all their sales are credit sales. A random sample of…

A: GivenA department store has determined that 65% of all their sales are credit salesp^=0.65sample…

Q: If the sample size is 100 and the population standard deviation is 20, then the standard deviation…

A: Standard error:The standard deviation of the sampling distribution of the mean is called standard…

Q: The daily number of bad checks received by a large department store in a random sample of 5 days out…

A: Given sample data,   Standard deviation =?

Q: A racing car consumes a mean of 106106 gallons of gas per race with a standard deviation of 66…

A: