The lifetime of a Super Tough AAA battery is normally distributed with mean u=28.5 hours and standard deviation o=5.3 hours. For a battery selected at random, what is the probability that the lifetime will be.   A. 25 hours or less?   B. 34 hours or more?   C. between 25 hours and 34 hours?

Q: 2. Medical research has concluded that people experience a common cold roughly two times per year.…

A: GivenMean(μ)=160standard deviation(σ)=40

Q: 1. The average number of milligrams (mg) of cholesterol in a cup of a certain brand of ice cream is…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 3. A soft drink vending machine dispenses soda into 12-ounce cups. Tests show that the actual amount…

A:

Q: A.What is the mean and standard deviation of the distribution? B.What is the probability that…

A: According to the answering guidelines, we can answer only three subparts of a question and the rest…

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: About 50% of all federal inmates are serving time for drug dealing. A random sample of 16 federal…

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

Q: 2. A study by Quadrant Information Services commissioned by Insure.com calculated auto insurance…

A: 2) Let X denote the annual auto insurance rates in the united states and it follows normal…

Q: 5. A Nielsen study indicates that mobile subscribers between 18 and 24 years of age spend a…

A: From provided information, let X be variable that ACNielsen study indicates that mobile subscribers…

Q: A Nielsen Company report states that the mean number of TV sets in a U.S. household is 2.24. Assume…

A: Solution: Given information: n= 85 Sample size  μ= 2.24 Population mean σ=1.2 Population standard…

Q: 6. The director of admissions at Kinzua University in Nova Scotia estimated the distribution of…

A:

Q: 5. The average number of acres burned by forest and range fires in a large New Mexico county is…

A: 5) Given Information: Mean μ=4300 Standard deviation σ=750

Q: 2.) A ski gondola in Vail, Colorado that carries skiers up a mountain bears a plaque stating that…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: Tompkins Associates reports that the mean clear height for a Class A warehouse in the United States…

A:

Q: 1. The waiting time at the doctor's office has a normal distribution with a mean of 35 minutes and…

A: Given: μ=35 minutesσ=2.6 minutes

Q: Suppose that the miles-per-gallon (mpg) rating of passenger cars is a normally distributed random…

A:

Q: A machine that builds gas tanks operates in such a way that the capacity of each tank is a normal…

A: Given that, Mean=16 gallons Standard deviation = 0.1 gallons

Q: 4. The average public elementary school has 468 students with a standard deviation of 87. If a…

A: Here use given step by step solution and normal distribution of sample mean

Q: 4. In a city, it is estimated that the daily maximum temperature in June is normally distributed…

A: (4.2) Obtain the probability that one day in June has a maximum temperature of more than 33°C. The…

Q: 1) 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: 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: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: It is given that the mean is 100 and standard deviation is 12.

Q: 2) Assume that men’s weight in the United States are normally distributed with a mean 172 pounds and…

A: Given,   Mean = 172 Standard deviation = 29

Q: The shape of the distribution of the time required to get an oil change at a 15 minute oil change…

A: Here we have μ = 16.2 min and Std (s) = 3.7min

Q: 1-The length of time a domestic flight must wait between gate departure and rakeoff taxi at Boston's…

A: (a) Obtain the probability that a plane must wait between 18 and 24 minutes before taxiing for…

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: A recent survey reported that 47​% of​ 18- to​ 29-year-olds in a certain country own tablets. Using…

A: (a)   Obtain the probability that in the next six 18- to 29-year-olds surveyed, four will own a…

Q: 5. The average salary of bank managers in a certain city is $91,900 pesos per hour with a standard…

A: Let X be the random variable from normal distribution with average or mean (μ) = $91900 and standard…

Q: A manufacturer of 8-watt LED downlights has past data that shows the lifespan of the downlight is…

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

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: The average credit card debt carried by undergraduates is normally distributed, with a mean of $3173…

A: The mean is 3173 and the standard deviation is 1120.

Q: An expert witness for a paternity lawsuit testifies that the length of a pregnancy is normally…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Suppose that the lifetimes of light bubs are approximately normaily dstributed, with a mean of 56…

A:

Q: 1. A 100-watt light bulb has an average brightness of 1640 lumens, with a standard deviation of 62…

A:

Q: What is the probability that a battery lasts more than four hours? b. What are the quartiles (the…

A: Let X denote the time until recharge for a battery. Given that X follows N(mean = 260, SD = 50),…

Q: It is believed that the average shoulder height of Furry Manumars is 16 inches, with a standard…

A: Given the mean height of furry Manumars as 16 inches, the standard derivation as 2 inches , sample…

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

A:

Q: 3 A play is enjoying a long run at a theatre. It is found that the play time may be modelled as a…

A: We have given that,  Play time be modelled are normally distributed with mean (Mu) = 130 minutes…

Q: 1. Suppose the mean life span of a randomly selected Chihuahua dog is normally distributed with a…

A: Solution

Q: 4. The weights of male basketball players on a certain collegiate basketball league are normally…

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

Q: Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists…

A: Given information: μ=64, σ=16 a)  x = 64 By applying normal distribution:- z=x-μσ=64-6416=0 z = 0.0…

Q: 2. The number of pages in a PDF document you create has is randomly distributed between 5 and 9…

A:

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given information: Mean=50 hours and standard deviation=15 hours. That is, μ=50 and σ=15

Q: The Economic Policy Institute periodically issues reports on wages of entry level workers. The…

A: Obtain the probability that a sample of 50 male graduates will provide a sample mean within $0.50 of…

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

A:

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: (4) Obtain the standard z-score for the random variable X equals 90. The standard z-score for the…

Q: Suppose that the starting salaries of MBAs at Wilfrid Laurier University (WLU) are normally…

A: Given the data MBA's at WPUNJ MBA's at Rutgers Mean μ1=62000 Mean μ2=60000 SD, σ1= 14500 SD,…

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: 1. A soft drink machine is regulated to that is discharges an average of 150 mL per cup. If the…

A:

Q: 1-The length of time a domestic flight must wait between gate departure and takeoff taxi at Boston's…

A: Solution: 1. Let X be the length of time a domestic flight must wait between gate departure and…

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.