A company that owns a fleet of cars for its sales has found that the service lifetime of disc brake pads has a mean of 40,000 miles and a standard deviation of 5000 miles.  The company installs new brake pads on 64 cars. what is the probability that the mean lifetime of the brake pads on the 64 cars will be between 39,250 and 40,500 miles?   What is the probability that the mean lifetime of the brake pads on the 64 cars will be more than 41,500 miles?   What is the probability that the mean lifetime of the brake pads on the 64 cars will be less than 40,950 miles?

Q: investigating how much time his classmates spend on social media per day, Ruben found that for  the…

A:

Q: manufacturer of light bulbs produces bulbs that last a mean of 950 hours with a standard  deviation…

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A: Given data,μ=20σ=9P(35<X<43)=?

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A: It is an important part of statistics . It is widely used .

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

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Q: According to the Department of Education, the time college students spend on their cell phones daily…

A: Given that, mean, mu=270 Standard deviation, sigma= 75 We know that, Z score=(X-mu)/sigma

Q: he weights of toilet paper rolls are normally distributed with a mean of 7 ounces and a standard…

A: mu = 7 s = 0.6

Q: According to the Department of Education, college students spend an average of 270 minutes per day…

A: The probability that students spent less than 230 minutes on their phone that day is obtained below:…

Q: The management at New Century Bank claims that the mean waiting time for all customers at its…

A: Given: n1=214, x¯1=4.35 and σ1=1.22 n2=280, x¯2=4.60 and σ2=1.53 σ1 and σ2 are the population…

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Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

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Q: At a large university, the mean amount spent by students for cell phone service is $38.90 per month…

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Q: The weight of a 10 year old girl is normally distributed with a mean of 80 pounds with a standard…

A: It is given that the mean is 80 and the standard deviation is 6.

Q: After many years of product car batteries testing, a company knows that the average life of a…

A: Solution: Let X be the life of a battery. From the given information, X follows normal distribution…

Q: The chief chemist for a major oil and gasoline production company claims that the regular unleaded…

A: Given Data Population Mean,μ = 4.0 Population Standard Deviation,σ = 1.2 sample…

Q: The amount of time spent by North American adults watching television per day is normally…

A: Let X be the time spent by the North American adults watching television per day. It is given that X…

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A: We have to find out given probability..

Q: A canning company that cans pineapple juice has a machine that automatically fills 16-ounce cans.…

A: Given data,Mean(μ)=16sd (σ)=1P(X>16)=?

Q: A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700 hours with a…

A: Given Mean=mu=700 Standard deviation=sigma=120 n=144

Q: What is the probability that a randomly chosen light bulb will have a lifetime of more than of 1,000…

A: Let X denote the lifetimes of the light bulb produce by Flip Company. Given that X follows N(mean =…

Q: Suppose that the height of women in Dakar, Senegal is normally distributed with mean 58 inches and…

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

Q: The time student spends on his/her homework is normally distributed with the mean of 122 minutes and…

A: From the given information, the mean value is 122 minutes and standard of 53. That is,  μ=122σ=53

Q: The port of South Louisiana, located along 54 miles of the Mississippi River between New Orleans and…

A: Hello, since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: The top-selling Red and Voss tire is rated 70000 miles, which means nothing. In fact, the distance…

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Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given values, μ=1.75σ=1.02x¯=1.68n=60

Q: The mean number of hours that American women who worked outside of the home per week was 34.6 hours…

A: The mean is 34.6 and standard deviation is 13.6. The sample size is 42. The probability their mean…

Q: The Boeing 727 carries 200 passengers and has doors with a height of 72 inches. heights of men are…

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Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given information- Population mean, μ = 1.75 pounds Population standard deviation, σ = 0.95 pounds…

Q: Based on tests of the Chevrolet Cobalt, the miles per gallon in highway driving are normally…

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Q: The Centers for Disease Control report that the total cholesterol levels for women, age 20-29, are…

A: Given, Mean = 183 Standard deviation = 37.2 Sample size = 30   The objective to is find the…

Q: The weight of people in a small town in Missouri is known to be normally distributed with a mean of…

A: Mean = 180 Standard deviation = 28 Sample size, n = 40

Q: The mean number of hours that American women who worked outside of the home per week was 34.6 hours…

A: Solution

Q: The amount of money that college students spend on food each week during the academic year is…

A: Given,mean(μ)=31.28standard deviation(σ)=11.42sample size(n)=10

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

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

A: Let us denote: X=Furnace repair billsGiven that X follows a normal distribution with mean=267 and…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Here, µ= 1.8 , σ= 1.05.

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given that: X is normally Distributed with mean µ = 1.75 and standard deviation σ = 1.02 By using…

Q: The diameter of ping-pong balls manufactured by a French company is 1.57 inches with a standard…

A:

Q: The New York Times reported that 17.2 million new cars and light trucks were sold in the United…

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

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given Information: The producer of a weight loss pill advertises that people who use this pill,…

Q: If the mean and standard deviation of cell sap values for healthy plants are 120 and 15 micrograms…

A: According to central limit theorem, the sampling distribution follows the normal distribution if the…

Q: A recent survey of the NHL found that the number of goals scored in Hockey *BY A PLAYER* in an 82…

A: From the provided information, Mean (µ) = 42 Standard deviation (σ) = 8 Let X be a random variable…

Q: mean cost of a new Sport Utility Vehicle (SUV) has been found to be $42,500 with a standard…

A: Given that: μ = $ 42500 ? = $ 2500 By using standard normal distribution we solve this problem

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…

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.