1) The time until recharge for a battery in a smartphone is normally distributed with a mean of 250 minutes and a standard deviation of 55 minutes. a. What is the probability that a battery lasts for more than 300 minutes? b. What is the probability that a battery will last for 240 to 360 minutes? c. What is the probability that the battery will last for less than an hour?

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given that, mean, mu= 57 Standard deviation, sigma= 3.5 We know that, Z score=(X-mu)/sigma Here…

Q: 2. The average comic book has 55 pages and a standard deviation of 7 pages. Assume it has a normally…

A:

Q: Suppose that the talk time on the Apple iPhone is approximately normally distributed with mean 7…

A: Solution: 7. Let X be the talk time on the Apple iPhone. From the given information, X follows…

Q: 2. A radar unit is used to measure speeds of cars on a motorway. The speeds are normally distributed…

A: Let X be the radar unit  X~N(mean μ=90, standard deviations σ=10) P(X>100)=?  Note: this…

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 56…

A: The provided information is  µ=56 σ=3.3 P(X>60) a.P(X-µσ>60-563.3)=P(z>1.21)=0.1131   (from…

Q: 21. The mean height of a Clydesdale horse is 72 inches with a standard deviation of 1.4 inches. What…

A: Mean(µ) = 72Standard deviations (σ) = 1.4X ~ N (µ, σ )= N(72, 1.4)

Q: 10. An education finance corporation claims that the average credit card debts carried by…

A:

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: GivenMean(μ)=120standard deviation(σ)=20

Q: 3. A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a…

A: Formula : Z =(X - μ)/σ

Q: Suppose that the mean and standard deviation of plants height are 130 and 42, respectively, if a…

A:

Q: In​ 2008, the per capita consumption of soft drinks in Country A was reported to be 19.11 gallons.…

A: GivenMean(μ)=19.11standard deviation(σ)=5

Q: Suppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia,…

A: Given: X~N(μ,σ)μ=88σ=6.4

Q: Cititon Forest contains a population of 297 chupacabra, whose masses have a mean of 40.1 kg and a…

A: Given that.   X~N( μ , ?^2 )   μ=40.1  , ?=8.3  , n=103   Z-score =( x - μ )/?

Q: Q/The speed of a file transfer from a company server to any employee personal  computer is normally…

A:

Q: The bank of American issues Visa and MasterCard credit cards. It is known that the balances on all…

A: Given information Mean µ = $756 Standard deviation  σ = $210 a) Probability that a randomly selected…

Q: Assume that the heights of adult puffins are normally distributed, with a mean of μ=μ= 15.9 inches…

A: Obtain the probability of obtaining a sample mean height less than 14.8 inches. The probability of…

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: A web site reported in 2018 that 47% of all web traffic comes from laptops and desktops. Based on a…

A:

Q: Suppose that the average cell phone bill at Bellevue University is $38.90 per month with a standard…

A: Given that, μ=$38.90σ=$3.64n=44 The mean standard deviation of sampling distribution of sample mean…

Q: The number of shots on goal in an amateur hockey league's games is normally distributed, with a mean…

A: Let us assume X= The number of shots on goal in an amateur hockey league's games Given that X…

Q: 2. The average daily jail population in the New Bilibid prison in Muntinlupa City is 36,295. If the…

A: The average population of jail is 36,295. The standard deviation of the population in jail is 3760.

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: 3. The average cholesterol content of a certain canned goods is 215 milligrams, and the standard…

A: Given that  X~N(μ= 215 , σ= 15 ) μ= 215 , σ= 15 , n= 25

Q: Suppose that the annual household income in a small Midwestern community is normally distributed…

A: Given : X ~ Nμ, σ mean, μ = $55000 S.D, σ = 4500 a. P(household will have an income between $50000…

Q: Suppose the probability a patient will recover from a disease following medication is 0.7. In a…

A: Given : the probability a patient will recover from a disease following medication is 0.7.  In a…

Q: At a customer service call center for a large company, the number of calls received per hour is…

A: Let X represent the random variable   Mean=140 SD=5   X~ Normal (140, 5^2)

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

A: From the provided information, Mean (µ) = 56 Standard deviation (σ) = 3.2 Let X be a random variable…

Q: 2. The number of hours spent playing video games a week by the residents of Minneapolis has a mean…

A: Answer -  Given mean μ = 10 hours   and Standard deviation σ = 13 hours                  Sample size…

Q: At a customer service call center for a large company, the number of calls received per hour is…

A: At a customer service call center for a large company, the number of calls received per hour is…

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 56…

A: Given: X~Normalμ=56,σ2=3.32

Q: 1. The weights of deer in a national park are normally distributed with a mean of 65 kilograms and a…

A: Given that, the weights of deer in a national park are normally distributed with a mean of 65…

Q: What is the probability that a transistor of this type will last at most 50 weeks? b. What is the…

A: Let , X→N(μ=40 , σ=5) Our aim id to find the following :  a. What is the probability that a…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Given,mean(μ)=35standard deviation(σ)=7.5sample size(n)=50

Q: An electrical component is designed to provide a mean service life of 3000 hours, with a standard…

A: Given that: X is normal Distributed with mean µ = 3000.0 and standard deviation σ = 800.0 By using…

Q: 1.) The average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs…

A: 1) Given that the mean is $55 and the standard deviation is $8. The costs are normally distributed.…

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 that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given data,μ=57σ=3.5

Q: 1. Suppose the height of a tomato plant follows a normal distribution with a mean of 74.5…

A:

Q: According to the National Association of Colleges and Employers, the 2015 mean starting salary for…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: Given information: Mean μ=28 minutes Standard deviation σ=5 minutes Number of times bus transported…

Q: Suppose that the number of gallons of milk sold per day at a local supermarket are normally…

A: Let X denote the number of gallons of milk sold per day. X ~ N(424.7,460.9609)

Q: Suppose the tires on your car have an average life expectancy of 60,000 miles, with a standard…

A:

Q: The number of shots on goal in an amateur hockey league's games is normally distributed, with a mean…

A: Let X=the number of shots X follows a normal distribution with mean=56.3 and standard deviation= 8.1…

Q: Charlotte, North Carolina has a mean annual rainfall of 43 inches, with a standard deviation of 4.2…

A: Solution: Given data Mean(μ) = 43 inches Standard deviation(s) = 4.3 inches Amount of rainfall  is…

Q: 6. Suppose that the average outstanding credit card balance for young professionals is 11,200 with a…

A: Given : The average outstanding credit card balance i.e. μ=11200 Standard deviation i.e. σ=2600…

Q: The time it takes an international telephone operator to place an overseas phone call is normally…

A:

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given, The proportion of light bulbs will last more than 60 hours is obtained as- The required…

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: Suppose that IQ scores of Grade 11 students of Abuyog Academy is normally distributed with a mean of…

A: