A normal distribution is observed from the number of rentals per week for a certain car rental company the mean is 15 rentals and the standard deviation is 3 rentals, what is the probability that on a randomly selected week, the car company rented greater than 24 rentals?

Q: The long-distance calls made by the employees of a company are normally distributed with a mean of…

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Q: A normal distribution has a mean of 60 with a standard deviation of 8. If one score is randomly…

A: Let A(x) be the probability that the value of a random variable X is less than or equal to x where X…

Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

A:

Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A: # Given: salary of workers follow normal distribution with mean mu=$60000 and standard deviations…

Q: The average age of bank managers is 40 y.o. Assumes the variable is normally distributed. If the…

A:

Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

A: The binomial distribution discovered by James Bernoulli. If X is a discrete random variable with…

Q: A survey has found out that a family generates an average of 17.2 pounds of garbage per week. Assume…

A: The mean is μ=17.2 and the standard deviation is σ=2.5 The population size is n=55 Therefore the…

Q: The distribution of scores for the third exam in a statistics course has a mean of 74 and a standard…

A: Given Information: Mean, μ=74 Standard Deviation, σ=15 Sample Size, n=36

Q: . Suppose the local store averages µ = 358 customers every day entering the facility with a standard…

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Q: Suppose the teenagers that attend public high school students get an average of 5.7 hours of sleep…

A: Solution: Given information: n= 35  Sample size μ= 5.7 hours Population mean σ= 1.7 hours Population…

Q: The amounts of electricity bills for all households in a city have a skewed probability distribution…

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Q: Suppose the age a student graduates from Salem State is Normally distributed. If the mean age is…

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Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A: Solution: Let X be the salary for workers at a company. From the given information, X follows normal…

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: 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: A bank's loan officer rates applicants for credit. The rating are normally distributed with a mean…

A: From the given information,   Mean = 705 Standard deviation = 32 Sample size = 50

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: The distribution of annual returns on common stocks has a mean of 9 percent and a standard deviation…

A:

Q: A veterinary researcher takes an SRS of 60 horses presenting with colic whose average age is 12…

A: Suppose a random sample of sufficiently large sample size drawn from a population whose mean is µ…

Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

A: The normal distribution is symmetric in nature having parameters μ and σ.The mean, mode, and median…

Q: An economics instructor observed that the marks in his Money and Banking course are normally…

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Q: The length of time it takes to groom a dog at Shaggy's Pet Shoppe is normally distributed a mean of…

A: The provided information is  µ=45 σ=10 1.P(X>60)=P(X-µσ>60-4510)=P(z>1.5)=0.0.0668The…

Q: what is a probability that a cast will weigh more than 2.2 kg?

A: Let , X→N(μ=4.5 , σ=1) We want to find the P(X>2.2)

Q: A recent report by the MLB shows that a typical family of four spends $490 to watch a professional…

A: Given Information: Let the random variable X denotes the attending a game in person. X has normal…

Q: A normal distribution has a mean 80 and standard deviation is 10. What is the probability of…

A: Given:    µ = 80     σ = 10

Q: When people take their car to the service department the cost has a mean cost of $873.12 and a…

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

Q: Recent report in Times showed a typical family of four spends $490 per month on food with a mean of…

A:

Q: In the United States, men’s heights have mean of 69 inches, and standard deviation of 3 inches.…

A: Let X be the height of men in United States. X follows normal distribution that has mean µ = 69 and…

Q: Teachers in a city have a normal distribution with an average weekly salary of $ 490 and a standard…

A: Let X denote the teachers in a city and it follows normal distribution with an average weekly salary…

Q: Supposed the price of paid apps for a certain category is normally distributed with the mean of $3.5…

A: Given that the  price of paid apps for a certain category is normally distributed with, Mean = 3.5…

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: We have to find given probability..

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

A:

Q: According to NelGo Inc., the mean yearly salary of Puerto Ricans living in Orlando is $35,600 with a…

A: Given information- Population mean, µ = $35,600 Population standard deviation, σ = $7,000 Let X be…

Q: The Average height of a certain age group of people is 53 inches. The standard deviation is 4…

A: From the given information,   Mean = 53 Standard deviation = 4

Q: The average age of managers is 40 years. Assume the variable is normally distributed. If the…

A: Given data,μ=40σ=5P(35<X<46)=?

Q: In a Normal distribution, the average is 45 and standard deviation is 12. What is the probability…

A:

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: Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the…

A: The provided information are: Population meanμ=12.23Population standard deviationσ=0.04 Consider, X…

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: The average amount of sleep students get a night is normally distributed with a mean of 6.5 hours…

A: It is given that the mean is 6.5 and standard deviation is 2.

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: Given that the lengths of pregnancies are normally distributed with, Mean = 266 Standard deviation =…

Q: The long-distance calls made by the employees of a company are normally distributed with a mean of…

A: Given that μ=6.3,σ=2.2 Find P ( x < 4 ) =? P ( 5 <x < 10 ) =? P ( x > 7 ) =?

Q: The average age of the bank managers is 40 years.Assume the varliable is normally distribution that…

A: Normal distribution is a continuous probability distribution that has many real-world applications.

Q: The weights of adult males are normally distributed with mean of 172 pounds and a standard deviation…

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Q: The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

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Q: The vacation leave time of employees in a firm in a month is normally with a mean of 100 hours and a…

A: Given data: Mean = 100 hours Standard deviation  = 20 hours To find: P(X > 180 ) =  ?

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.…

Q: Children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the…

A: Given that, μ=25 hoursσ=3 hoursn=20 The mean and standard deviation of the sampling distribution of…

Q: The average height of 4 year-old children is 40 inches with a standard deviation of 2.4 inches. If…

A: The random variable height follows a normal distribution. The population mean is 40. The population…

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.