The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 65 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 51 and 65?

Q: Suppose a small paint manufacturing company has a daily production that is normally distributed with…

A: Solution: It is given that a small paint manufacturing company has a daily production that is…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given: X~N(μ,σ)μ=64σ=10

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A: From the provided information, Mean (µ) = 17.2 Standard deviation (σ) = 3.4 X~N (17.2, 3.4)

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A: Given, μ = 70 σ = 10 Z = X-μσ

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A: From the given information, the mean is 114.8 and the standard deviation is 13.1.

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A:

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A: Solution-: Given:μ=40,σ=11.2 We want to find  the proportion of customers who use ATMs between 30…

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Q: UCES LIGHT BULBS, BULB NORMAL DISTRIBUTION WITH A MEAN OF 800 HOURS AND A STANDARD DEVIATION OF 40…

A: Answer Calculation:1. Calculate the z-score using the formula:      where:   - is the value we want…

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A:

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A: X follows a Normal distribution with mean = 1497 and S.D = 293 Then z=(x-mean)/SD = (x-1497)/293…

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A: Population Mean,μ = 65 Population Standard Deviation,σ = 0.3

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A: Let  X be the random variable from normal distribution with mean (μ) = 0.9 and standard deviation…

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A:

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A: The null and alternative hypothesis is,

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A: We have given Mean(µ) = 40Standard deviations (σ) = 11.2X ~ N (µ, σ )= N(40, 11.2)

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A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: The mean is 40 and the standard deviation is 11.

Q: Suppose the scores of students on an exam are normally distributed with a mean of 558 and a standard…

A:

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A:

Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A:

Q: A manufacturer is producing metal rods, whose lengths are normally distributed with a mean of 65.0…

A: #.Given : length of rod follow normal distribution with mean=65 cm and standard deviations=0.3 cm…

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A:

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given: μ=63σ=5

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A: normal distribution ,μ=17σ=1.75n=200p(13<X<16)=?

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A: The detailed solution is as follows below:

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: given data normal distributionμ = 1540σ = 299minimum requirement to admission : 2377P(x>2377) = ?…

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A:

Q: The average wage for bank managers in a certain city is $91,900 per hour with a standard deviation…

A: Given that  X~N( μ = 91900 , ? = 24300) μ = 91900 , ? = 24300 Z-score =( x - μ )/?