The following are the stopping times (in seconds) of 4r/s vehicles after breaking at 65mph:3,4,5,8. Use an appropriate formula to find the standard deviation of this sample.

Q: The mean number of customers arriving at a restaurant during a 15-minute period is 13. Find the…

A:

Q: The mean wingspan of a sample of 31 birds of a particular species is 30 inches.  The standard…

A: Sample size n =31 Sample mean=30 Population standard deviation =4

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Given data:  mean = 0°C and  standard deviation =  1.00°C.  Assume that the readings at freezing on…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Given,μ=0σ=1 P(Z<z)=0.29

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Answer - A normal distribution with mean μ= 0  and σ = 1               Find P86,    the 86-…

Q: The human population has a mean IQ score of µ = 100 and a standard deviation of σ = 15. Find the…

A: From the given information, µ = 100 and σ = 15.

Q: Assume that adults have IQ scores that are normally distributed with μ=38 and a standard deviation…

A:

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: From the provided information, Mean (µ) = 0 Standard deviation (σ) = 1 X~N (0, 1) Here X be a random…

Q: To estimate the mean height μ of male students on your campus, you will measure an SRS of students.…

A: From the provided information, The height of young men are approximately normal with standard…

Q: Assume that adults have IQ scores that are normally distributed with μ=105 and a standard deviation…

A: Assume that adults have IQ scores that are normally distributed with μ=105 and a standard deviation…

Q: A population of scores has μ = 80. In this population, a score of X= 92 corresponds to z = 5. what…

A: Given: μ = 80 z = 5 X= 92

Q: average heigth is 163 cm, standart deviation is 10 cm. compute p(X>168 cm) ?

A: Given,μ=163σ=10P(X>168)=?

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: Solution-: Given probability distribution: Let, X=The number of girls among 8 children X P(X)…

Q: How many of the 250 perch netted by a fisherman would you expect to have a mass more than 400g, if…

A: The given data is as follows:Sample size, Population mean, Population standard deviation,

Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…

A: Given Data Population Mean,μ = 0.0 Population Standard Deviation,σ = 1.0

Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…

A:

Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…

A: Let X denote the readings at freezing on a bundle of thermometers are normally distributed with a…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: From the given information, the readings at freezing on a batch of thermometers are normally…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A:

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: For the standard normal distribution, the Mean is 0 and the standard deviation 1. Draw the normal…

Q: On a recent calculus exam, a class mean was 75 with a standard deviation of 3.4. Calculate the…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 3.4 Let X be a random variable…

Q: Toyota needs to determine the average service time to check and repair 80% of their customer’s…

A: Here, σ=300 secs60=5 minutes, z=0.84, x=30 minutes.

Q: A city mayor in Michigan is planning the number of new snow plows he must purchase to remove the…

A: Here, µ=112, σ=14, and n=10.

Q: A major credit card company has determined that the amount its customers charge on their accounts is…

A: Given that, Mean = 2800 Standard deviation = 200 Number of customers = 20000

Q: At a hair salon, customers arrive at the rate of 3 customers per hour. The standard deviation of the…

A: Standard Deviation: A standard deviation is a unit of measure of data spread in proportion to the…

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Given: Mean (µ) = 0oC Standard deviation (σ) = 1.000C X~N (0, 1)

Q: planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 100…

A: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…

Q: The human population has a mean IQ score of µ = 100 and a standard deviation of σ = 15. Find the…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

Q: A certain slope at a ski resort records the time it takes for skiers to ski the entire trail. It…

A: Given, mean is 8.3 and standard deviation is 2.5 minutes.

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A:

Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…

A: The provided information are: Population meanμ=112Standard deviationσ=17 Consider X be a random…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0°and standard…

A: It is given that the mean is 0 and standard deviation is 1.

Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…

A:

Q: A population of scores has µ=44. In this population, a score of X= 40 corresponds to z= - 0. 50.…

A:

Q: On average indoor cats live to 14yrs oldvwith a standard deviation of 2.4 yrs.Suppose the…

A: It is given that the mean is 14 and the standard deviation is 2.4.