An electrical company claims that the average life of the bulbs it manufactures is 1200 hrs. with the standard deviation of 250 hrs. If a random sample of 100 bulbs is chosen, what is the probability that the sample mean will be. Greater than 1150 hrs. Less than 1250 hrs. Between 1150 and 1250 hrs.

An electrical company claims that the average life of the bulbs it manufactures is 1200 hrs. with the standard deviation of 250 hrs. If a random sample of 100 bulbs is chosen, what is the probability that the sample mean will be. Greater than 1150 hrs. Less than 1250 hrs. Between 1150 and 1250 hrs.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Find the probability that a randomly selected high school student who took the reading portion of…

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

A: We want to find given probability for given questions

Q: a study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: Given : μ = 8.4 , σ= 1.8 and n= 40 By Central Limit Theorem, x̅ follows a Normal distribution with…

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

A: Given: Mean, μ=100 Standard deviation, σ=15 (a) Probability that a randomly selected utility bill…

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

A: From the given information, Mean = 35 Standard deviation = 7.5 The objective is to find the…

Q: The average time for a courier to travel from Manila to Pampanga is 200 minutes, and the standard…

A: given that mean (μ) =200sd (σ) = 10

Q: The weights of newborn for hippopotami is approximately Normal, with a mean of 86 pounds and a…

A: Given,mean(μ)=86standard deviation(σ)=10

Q: n a recent year, the ACT scores for high school students with a 3.50 to 4.00 grade point average…

Q: An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with…

A: According to central limit theorem if the population is normal or the sample size is at least 30,…

Q: If the total cholesterol values for a certain population are approximately normally distributed with…

A: Let X denote the total cholesterol values for a certain population and it follows normal…

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: The given data are: Mean, μ=31 minutes Standard deviation, σ=5 minutes n=40 For sample average, z is…

Q: An electrical appliance made by Company A has an average life of 2500 hours, with a standard…

A: Given: Company APopulation mean μ1=2500Population standard deviation σ1=500Sample size n1=300Company…

Q: A report announced that the median sales price of new houses sold one year was $211,000, and the…

A: Sample mean will also follow normal distribution with parameters,

Q: Furnace repair bills are normally distributed with a mean of 263 dollars and a standard deviation of…

A: Here, µ = 263 and σ = 25.

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 18.7…

A: It is given that the mean is 187, the standard deviation is 47 and the sample size is 34.

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

A: Let X be the random variable from normal distribution with mean (μ) = 100 and standard deviation (σ)…

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

A: Given that, Mean = 22.9 Standard deviation = 6.7

Q: An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with…

A: The mean is 1,300 and the standard deviation is 260 hours.

Q: The average number of milligrams (mg) of cholesterol in a cup of certain brand of ice cream is 660…

A: Step 1: Given: X~N(μ,σ)μ=660σ=35x=670

Q: The average time for a courier to travel from Manila to Pampanga is 200 minutes, and the standard…

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

A: Let X be the monthly utility bills in a city are normally distributed with mean μ=$100 and standard…

Q: he reading speed of second grade students in a large city is approximately normal, with a mean of…

A: P(X>96)=?

Q: The average credit card debt for public school teacher is 14,975. If the debt is normally…

A: Given, Average credit card debt for public school teacher=X=14975 Standard deviation= 5650…

Q: The average hourly sale of a certain ride in an amusement park is P148.75/hr with a standard…

A: Given information- Population Mean µ = P148.75/hr Standard deviation (σ) = P75.76 Let X be the…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.6…

A: Given, μ=5.6σ=1.8

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

A: (a) Let x be the monthly utility bills in a city which follows normal distribution with mean 100,…

Q: A. C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of…

A: Let x be the number of hours ages of 2 and 5 watch television which follows normal distribution with…

Q: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. If GPA…

A: Let X be a continuous random variable of average GPA of university students is normally distributed…

Q: In a given year, the average annual salary of a cricket player was $205 000, with a standard…

A: The probability that the sample mean will be less than $210,000 is,…

Q: A waitress believes the distribution of her tips has a model that is slightly skewed to the right,…

A: a) The probability that she will earn at least $350 is obtained below: From the given information,…

Q: The weights of newborn for hippopotami is approximately Normal, with a mean of 85 pounds and a…

A: Given Mean, μ=85 pounds and standard deviation, σ=12 pounds

Q: The daily withdrawals from an ATM located at a service station is normally distributed with a mean…

A: Given information: μ=5000, σ=800 x=6400 Use the formula for the normal distribution to determine the…

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

A: According to the provided information, Mean (µ) = 50 hour Standard deviation (σ) = 15 hour

Q: The population average fuel efficiency of U.S. light vehicles for 2005 was 21 mpg. If the standard…

A: Given,sample size (n)=25sample mean(μ)=21standard deviation(σ)=2.9

Q: The monthly In distributed, with mean of $100 standard deviation of $13. Find the probability that a…

Q: The number of calories in a certain dessert is normally distributed with a mean of 210 and a…

A: We have to find the probability that the dessert one selects will contain between 185 and 216.

Q: A certain type of storage battery last on average, 3.0 years with a standard deviation of 0.5 year.…

Q: he average weekly unemployment benefit in Idaho is $272. Suppose that the benefits are normally…

A: We have given that Sample size n=15 , mu=272 ,sigma =43 X~N(mu,sigma^2)

Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…

A: given that mean(μ)= 80.5 standard deviation (σ) = 9.9

Q: An electrical company claims that the average life of the bulbs it manufactures is 1200 hours with…

Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a…

Q: An electrical appliance made by company A has an average life of 2500 hours, with a standard…

A: Given : μ1 = 2500μ2 = 2300n1 = 300n2 = 200σ1 = 500σ2 = 800

Q: he weights of truffles follow a normal distribution, with a mean weight of 347 grams and a standard…

A: Here it is given that - Mean (μ) = 347 Standard deviation (δ) = 15.3 Let X be the weight of truffles…

Q: What percentage of the class has a test score between 68 and 82? Approximately how many students…

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

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

A: Given that, Mean = 2.5 Standard deviation = 0.5 Sample size = 50

Q: The lifetime of a particular brand of AA batteries follows a normal distribution. The mean lifetime…

A: Correct answer is d. 0.0606

Q: The photoresist thickness of wafers in semiconductor manufacturing has a mean of 10.6 micrometers…

A: Let, X=The photoresist thickness of wafers. Given that X follows a normal distribution with…

Q: Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard…

A: GivenMean(μ)=63.6standard deviation(σ)=2.5sample size(n)=100

Q: Supppose the average age of family members is 34 with a standard deviation of 4.If the members of…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.3…

Question

An electrical company claims that the average life of the bulbs it manufactures is 1200 hrs. with the standard deviation of 250 hrs. If a random sample of 100 bulbs is chosen, what is the probability that the sample mean will be.
Greater than 1150 hrs.
Less than 1250 hrs.
Between 1150 and 1250 hrs.

Expert Solution