The life of a Radio Shack record player is normally distributed with a mean of 3.2 years and a standard deviation of 0.7 years. Radio Shack guarantees its record players for 2 years. (a) Find the probability that a record player will last less than 2 years? % (b) Find the probability that a record player will last more than 4 years?

Q: The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 70…

A: It is given that the amount of snowfall falling in a certain mountain range is normally distributed…

Q: On average, the printer uses 500 sheets of paper each day with a standard deviation of 10 sheets.…

A: Given mean= 500 and standard deviation= 10 Let, X= number of sheets used by the printer  X follows…

Q: The amount of snowfall falling in a certain mountain range is normally distributed with a mean of…

A:

Q: For males in their 30s, the distribution of cholesterol readings, in mg/dl, is normally distributed…

A:

Q: The amount of snowfall falling in a certain mountain range is normally distributed with an average…

A: From the provided information, Mean (µ) = 170 inches Standard deviation (σ) = 20 inches X~N (170,…

Q: The flying time of a drone airplane has a normal distribution with a mean of 4.76 hours and a…

A: Given ,         Meanu=4.76         Standard deviation σ=0.04

Q: On the recent SAT English test, the scores were normally distributed with a mean of 1000 and a…

A: a. The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the…

Q: The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20.…

A: Given that, mean (mu)= 250  And standard deviation, sigma= 20 We know that, Z Score is given by, Z…

Q: An insurance company has 10,000 automobile policyholders. The expected yearly claim per policyholder…

A: Given : Mean = μ = 230 Standard deviation = σ =  900 sample size = n = 10000

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

A: Let X be the random variable from normal distribution with mean or average (μ) = 53 and standard…

Q: The length of timber cuts are normally distributed with a mean of 95 inches and a standard deviation…

A: Given Mean(μ)=95standard deviation(σ)=0.52sample size(n)=45

Q: The amount of snowfall falling in a cetain mountain range is normally distributed with a 70 inches,…

A: Given Information: Mean μ = 70inches Standard deviation σ = 10 inches Sample size n = 25 To find the…

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: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A: Let X be the height of a woman aged 20-74 years which follows normal distribution with mean 64…

Q: A certain type of battery has a mean shelf life of 600 days with a standard deviation of 28 days. a.…

A: Given data,μ=600σ=28

Q: A study found that the heights of college males follow a normal distribution with a mean of 70…

A:

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

A:

Q: The length of an episode of the hit TV show, Fake Blood, is normally distributed with a mean of 62…

A: Given that  X~Normal(μ=62 , ?=4.5) Mean=μ=62 , Standard deviation=?=4.5)

Q: The score obtained by 800 students in a statistics examination are approximately normally…

A: Given: n=800, μ=78 and σ=7.   The z-score is calculated asz=x-μσ=80-787=0.29

Q: A company sells printers with a mean life of 2 years (24 months) and a standard deviation of 4…

A: GIVEN: mean = 24 months           standard deviation = 4 months

Q: The distribution of weekly salaries at a large company is right skewed with a mean of $1000 and a…

A: Given,sample size (n)=50mean(μ)=$1000standard deviation(σ)=$350

Q: The average Pagibig salary loan for RFS Pharmacy Inc employees is 23,000. If the debt is normally…

A: The average Pagibig salary loan for RFS pharmacy Inc employees is 23000. If the debt is normally…

Q: The average expense of the dela cruz family is 12,600 every half month with a standard deviation of…

A: It is given that μ=12600 and σ=1570 Also x<11000 z=x-μσ=11000-126001570≈-1.02

Q: The length of adult parakeets is normally distributed. If the mean length is 8 inches with a…

A: Normal distribution is a continuous probability distribution and it has so many real world…

Q: the amount of snowfall falling in a certain mountain range is normally distributed with a mean of 88…

A: It is given that the normal distribution has a mean, μ=88 and the standard deviation, σ=16. The…

Q: The daily sales of a small retail store in Toronto for the last 365 days are normally distributed…

A:

Q: The average life of a certain brand of a car battery is 4 years with a standard deviation of 15…

A:

Q: The amount of coffee dispensed by a coffee dispensing machine is normally distributed with mean of…

A: Solution

Q: The time until recharge for a battery in a smartphone is normally distributed with a mean of 250…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: The amount of snowfall falling in a certain mountain range is normally distributed with the mean of…

A:

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

A: Solution-: Given: μ=53inches,σ=4inches We find, P(a selected individual's height will be greater…

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

A: Given the average age of bank managers is 40 years old. Assume the variable is normally distributed,…

Q: recent​ year, the scores for the reading portion of a test were normally​ distributed, with a mean…

A: given that : Population mean = 21.9 Standard deviation = 6.1 X represents the scores for the reading…

Q: The life of a Radio Shack record player is normally distributed with a mean of 3.6 years and a…

A: Here, mean is 3.6 and standard deviation is 0.8.

Q: The nicotine content of a brand of cigarettes is normally distributed with a mean of 2.0mg and a…

A: Standard normal score: The standard normal score follows normal distribution with mean 0 and…

Q: The weekly salaries of a group of employees are normally distributed with a mean of $800 and a…

A:

Q: Given that pregnancies have a mean of 266 days and standard deviation of 16 days, it is found that…

A: We have given that,  X be the random variable from normal distribution with mean = 266 and standard…

Q: The time for a student to commute from home to a university campus is Normally distributed with a…

A: It is given that the mean is 25 minutes and the standard deviation is 10 minutes.

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: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A: Given that: X is normal Distributed with mean                   µ = 64.0 and standard deviation σ =…

Q: The lengths of human pregnancies are approximately normally distributed with a mean of 268 days and…

A: Let X is the random variable representing lengths of human pregnancies. X~Normalμ=268,σ=16

Q: in one region the September energy consumption levels for single-family homes are found to be…

A:

Q: For women aged 18-24, systolic blood pressures are normally distributed with a mean of 114.8 mm Hg…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The length of human pregnancies are normally distributed with a mean of 267 days and a standard…

A: Let "X" be the length of human pregnancies.

Q: In a test taken by a large number of students, the average score of the test takers is 90 and the…

A: The mean is 90 and the standard deviation is 4.

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

A: Mean(µ) = 53Standard deviations (σ) = 4 Since the distribution is normally distributed X ~ N (µ, σ…

Q: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of…

A: Normal distribution - The normal distribution is widely used to calculate probabilities which are…

Q: Suppose the average age at death of a California Adventist is 85.5 with a standard deviation of 5.6…

A: Given Data: Let X represent the random variable Mean=85.5 SD=5.6   Assuming normal distribution X~…

Q: Alfie Solomons owns a rum distillery. On average, he produces 100 liters of rum with a standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: IQ scores are normally distributed with a mean of 110 and a standard deviation of 2.9. In a sample…

A: For the solution of the problem follow the next step.