What is the probability that a transistor of this type will last at most 50 weeks? b. What is the probability that a transistor of this type will not survive the first 35 weeks?

Q: Among the workers at a large factory, the number of sick days taken per year is normally…

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A: Given data,μ=69.7σ=3P(68<X<70)=?

Q: A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their…

A: Given that.   X~N( μ , ?^2 )   μ= 115    , ?=20   Z-score =( x - μ )/?

Q: Assume the average attendance of a college game is normally distributed with a population mean of…

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Q: hotel in a European city follows a normal distribution with a mean of 170 euros and a standard…

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Q: Rivers Casino did an audit of all of their blackjack tables and found that the amount of money…

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

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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: 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: the breaking of a particular rope is normally distributed, with the mean of 350 lbs. and a standard…

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Q: Following safety protocols, Starburst serves its customers with a mean time of 7.5 minutes which…

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Q: The College Board National Office recently reported that in 2011-2012, the547,038 high school…

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

A: Since you have posted multiple question, we only provide answers of first three subparts . Please…

Q: Assume that the traffic to the web site of Smiley's People, Inc., which sells customized T-shirts,…

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A: P(X>96)=?

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

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A: Given that mean =8702 ,s.d =678 p( 7000 < x < 8000) =?

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

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

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

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Q: The average resident of Metro City produces 770 pounds of solid waste each year, and the standard…

A: We have to find probability

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

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

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

Q: Following safety protocols, Starburst serves its customers with a mean time of 7.5 minutes which…

A:

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

A:

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: Suppose the heights of 18 year old men are approximately normally diatributed, with mean 67 inches…

A: Mean = 67 Standard deviation = 5

Q: A newspaper publisher has mean sales of 28,200 copies per day with a standard deviation of 3,100…

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Q: In a health examination survey of a prefecture in Japan, the population was found to have an average…

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

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Q: 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 the standard deviation is 15.

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

A: Given : mean = 100 Standard deviation = 13

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

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Q: In a murder trial in Los Angeles, a shoe expert stated that the heights of men with size 12 shoes is…

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

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

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…