Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of 20 dollars. If 64 of these repair bills are randomly selected, find the probability that they have a mean cost between 267 dollars and 269 dollars.

Q: Assume that women's heights are normally distrubuted with a mean of 63.6 inches and a standard…

A: From the given information, the mean is 63.6 and the standard deviation is 2.5.

Q: The average age of accountants is 53 years, with a standard deviation of 5 years. If an accounting…

A: We have to find probability..

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2010…

A:

Q: Furnace repair bills are normally distributed with a mean of 264 dollars and a standard deviation of…

A: Let X denote the cost of furnace repair bills. Given that X follows Normal(mean = 264, SD = 30)

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Q: The number of crackers in a box of Crackerbox Crackers is normally distributed with a mean of 75 and…

A: The provided information is  µ=75 σ=2 P(X>76) P(X>76)=P(X-µσ>76-752)=P(z>0.5)=0.3085The…

Q: The heights of children 2 years old are normally distributed with a mean of 32 inches and a standard…

A: Consider X be a random variable which follows normal distribution indicates heights of children 2…

Q: Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of…

A: Given,μ = 267$σ = 20$n=64P(267<x<269+)=?

Q: If the mean height of a population of students is 68 inches with standard deviation 3 inches, what…

A: Given that      The mean height of a population of students is 68 inches with standard deviation 3…

Q: Assume that the women's heights are normally distributed with a mean of 63.7 inches and a standard…

A:

Q: The Monthly salaries of teachers at Los Angeles Trade Tech are normally distributed with a mean of…

A: Given information: The monthly salaries of teachers at Los Angeles Trade Tech are normally…

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: Since a population has a mean of 73.5 and a standard deviation of 2.5, what is the probability that…

A: We have to find given probability.....

Q: A company makes batteries that have life spans with a mean of 3000 hours and standard deviation of…

A: From the given information, Sample size (n) = 85 Mean (µ) =3000 Standard deviation (σ) =70 Consider,…

Q: In a study of work patterns, data from 669 subjects were collected. For the time spent in child…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 23.08,…

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

A: Here, mean is µ = 55, standard deviation is σ = 8, and n = 4.

Q: The weights of college football players are normally distributed with a mean of 200 pounds and a…

A: Z = x¯ - μσn~N(0,1)

Q: The weight of a bag of sugar is normally distributed with mean of 550g and a standard deviation of…

A:

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

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 SICK-LEAVE TIME OF EMPLOYEES IN A FIRM IN A MONTH IS NORMALLY WITH A MEAN OF 100 HOURS AND A…

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

A: Given: Mean=μ=468 Standard deviation=σ=87

Q: In a health club, research shows that on average, patrons spend an average of 46.2 minutes on the…

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Q: In company XYZ, the success of an email to land into a spam folder is 4%. If an account received 20…

A: Solution To find the probability we will use Excel  Given data is  n= 20

Q: Proctor & Gamble reported that an American family of four washes an average of 1 ton (2000…

A: Introduction:Here, the suggested population mean, μ = 2,000 pounds.The population standard…

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

A: Given Information: Mean = 8.4 Standard Deviation = 1.8 n = 40

Q: The sizes of houses in Kenton County are normally distributed with a mean of 1369 square feet with a…

A: From the given information, the mean and standard deviation are 1,369 and 171.

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A:

Q: According to police sources, a car with a certain protection system will be recovered 90% of the…

A: Given problem is a binomial distribution with:

Q: Find the mean variance and standard deviation for the number of heads when 10 coins are tossed.

A: When a coin is tossed it can it can land either head or tail. Therefore, the number of outcomes is…

Q: A chemical engineer processes 20 pilot batches and has the following active ingredient yield…

A: The probability of getting at least 50.5 grams per litre if the true mean yield is 52 grams per…

Q: If we know that the length of time it takes a college student to find a parking spot in the library…

A: Consider a random variable X which, follows normal distribution, indicates the time to find a…

Q: The average person uses 130 gallons of water daily. If the standard deviation is 35 gallons , find…

A: Given that, Mean = 130 Standard deviation = 35 Sample size = 25

Q: The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 360…

A: Given info: The weight of a small Starbucks coffee is a normally distributed random variable with a…

Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

A:

Q: Cans of a popular soft drink are filled so that the actual amounts have a mean of 15.00 oz and a…

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Q: assume that cans of coke are filled so that the actual amounts have a mean of 12 oz and a standard…

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Q: There is an 85% chance that a randomly selected person will take their own re-usable bags to the…

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Q: The life of an electronic transistor is normally distributed, with a mean of 500 hours and a…

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Q: The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and…

A: From the given information,Sample size 30, mean 60 months and standard deviation 8 months

Q: The grades in a standardized test have a mean of 78, a known standard deviation of 8, and are…

A: Given:

Q: Most graduate schools of business require applicants for admission to take the Graduate Management…

A: Given:  mean =527 standard deviation = 112 Let the scores of GMAT be X Scores on the GMAT are…

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

A: Here, µ = 72, σ = 9.

Q: The distribution of the number of gallons of water used for taking a shower in the United States are…

A: Given information: n=30μ=17.2σ=4.2x¯=19

Q: A study of the amount of time it takes to rebuild the transmission for a 2005 Chevy Cavalier shows…

A: Given information- Population mean, µ = 8.4 hours Population standard deviation, σ = 1.8 hours We…

Q: The weights of college football players are normally distributed with a mean of 191 pounds and a…

A: Given,   Mean = 191 Standard deviation = 49

Q: Furnace repair bills are normally distributed with a mean of 269 dollars and a standard deviation of…

A: Given: Population meanμ=269Sample size(n) =64Population standard deviationσ=20 Consider X be the…

Q: The ages of patients in a hospital were normally distributed with a mean of sixty-three years and a…

A:

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.