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 62 and a standard deviation of 8. Using the Empirical Rule rule, what is the approximate percentage of lightbulb replacement requests numbering between 62 and 70? Do not enter the percent symbol. ans = %

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

A: From the provided information, Mean (µ) = 46 Standard deviation (σ) = 6 Using empirical rule: 68% of…

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

A:

Q: The bell company manufactures laptop computers. A study indicates that the life spans of their…

A: Here, The bell company manufactures laptop computers. A study indicates that the life spans of their…

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

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: Given,sample size(n)=21sample mean(x¯)=720standard deviation(s)=20α=0.05

Q: Last year, the numbers of skateboards produced per day at a certain factory were normally…

A: Here we use the formula ; z=(x-mean)/standard deviation

Q: The Bell Company manufactures laptop computers. A study indicates that the life spans of their…

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

A: Bell shaped curve

Q: An automobile insurance company claims that its rates for teenage drivers average $470 less per year…

A: Given: population mean = 470sample size=30sample mean = 435std deviation =65

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

A: We first find the z-score of 45 and 57.z score of 45=45-456=0z score of 57=57-456=2

Q: When Nachelle runs the 40o meter dash, her finishing times are normally distributed with a mean of…

A: The empirical rule for normal distribution states that 95% of data lies within 2 standard deviations…

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

A:

Q: At a local restaurant, the amount of time that customers have to wait for their food is normally…

A: We have given that,  X be the random variable from normal distribution with mean = 28 and standard…

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

A: Empirical rule  P(-3σ+μ<X+3σ+μ)=99.73%  P(-2σ+μ<X+2σ+μ)=95% P(-σ+μ<X+σ+μ)=68%

Q: The NCAA estimates that the yearly value of a full athletic scholarship at in­state…

A:

Q: A group of friends, on average, had $300 in their wallets, with a standard deviation of $50.…

A: It is given that the mean and standard deviation are $300 and $50, respectively.

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

A: Given Information: The distribution of number of daily requests is bell shaped and has a mean of 55…

Q: a mid-size company, the distribution of the number of phone calls answered each day by each of the…

A:

Q: A job placement director claims that the average starting salary for nurse is $26000. A sample of 18…

A: Given,sample size(n)=18sample mean(x¯)=25620standard deviation(s)=680α=0.05

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

A: Given information : Mean = x = 46 Standard deviation = σ = 7

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

A:

Q: the standard error of the mean for a random sample of 49 tax returns is ________.

A: Given information Mean = $ 1,949 Standard deviation = $750 Sample size = 49

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

A: Given a mean of 51 and a standard deviation of 4.

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

A: Solution: Let X be the number of daily requests. From the given information, X follows normal…

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

A: We have given that the distribution of the number of requests is bell-shaped and has a mean of 38…

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Solution-: Let, X= The distance traveled per truck per year Given: We find, P[ either less than…

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

A: Given: According to empirical rule (68-95-99.7 rule). 44 50 56 62 68 74…

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

A: Let "X" be the number of daily requests for lightbulb replacement. According to the empirical rule…

Q: A job placement director claims that the average starting salary for nurse is $25000. A sample of 15…

A:

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

A: Given, X~Nμ,σwhere μ=56and σ=9

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

A:

Q: A newspaper article reported that people spend a mean of 6.5 hours per day watching TV, with a…

A: Given data ,μ=6.5σ=2.0Pz>z=10 %

Q: A highway study of 8000 vehicles that passed by a checkpoint found that their speeds were normally…

A:

Q: A popular soft drink is sold in 1-liter (1,000-milliliter) bottles. Because of variation in the…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if…

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

A: We have given that The number of daily maintenance requests recieved is bell-shaped with a mean of…

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

A: Given: μ=63σ=5

Q: A high end store is looking to open new stores, but requires that 85% of the households in a…

A: Let X= income of the households  Given that X is normally distributed with mean= 98000 and standard…

Q: In an article about the cost of health care, Money magazine reported that a visit to a hospital…

A: Given data,μ=328σ=92P(X>500)=?

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

A: Given information : Population mean = μ = 58 Population standard deviation = σ = 8

Q: The number of cell phone minutes used by staff of DIT at Bowie State University follows a normal…

A: We have, X= The number of cell phone minutes used by staff of DIT at Bowie State university. Mean=…

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

A: Solution: We are given that the distribution of the number of daily requests is bell-shaped and has…

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

A: Given that, μ=35,σ=6 Empirical / 68-95-99.7  rule plot:

Q: Suppose the mean net worth of the resi- dents of Sun City, a retirement community, is $611,000…

A:

Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a​…

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

A:

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

A: From the provided information, Mean (µ) = 63 Standard deviation (σ) = 8 Using empirical rule,…

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

A: Given, u=62σ=4X~N(62,16)

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

A: Given that ; μ = 61  ? = 7 By using the empirical rule of normal distribution.

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

A: Here mean is 54 and the standard deviation is 3. Empirical rule: According to empirical rule,…

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

A: