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 40 and a standard deviation of 4. Using the Empirical Rule rule, what is the approximate percentage of lightbulb replacement requests numbering between 36 and 40? Do not enter the percent symbol. ans = %

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Q: a manufacturer claims that the mean lifetime of its fluorescent bulbs is 1050 hours. a homeowner…

A: Given n=40 Standard deviation =80 Xbar=1030 Level of significance=0.05 Mu0=1050

Q: Blood sugars from eight patients in a rural clinic were recorded last summer by the local physician.…

A: Given blood sugar results are120,145,200,250,79,100,894,255sample size(n)=8

Q: A vending machine dispenses coffee into a twenty-ounce cup. The amount of coffee dispensed into the…

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Q: Brewed decaffeinated coffee contains some caffeine. VWe want to estimate the amount of caffeine in 8…

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Q: minutes. What percentage of his commutes will be between 13 and 26 minutes, to the nearest tenth?

A: Let X be the random variable that amount of time to arrive. Given that, X~N(μ=23,σ=5)

Q: A sample of the number of sick days used by employees at a clinic is as indicated: 0,    0,    1,…

A: Given data 0,0,1,1,2,4

Q: video game c

A: given, sample size(n) = 1500 sample mean (x̄) = 115 sample stadard deviation (s) = 11

Q: A vending machine dispenses coffee into a twenty-ounce cup. The amount of coffee dispensed into the…

A: A vending machine dispenses coffee into a twenty-ounce cup. Given that σ=0.01 You can allow the cup…

Q: The mean annual income for people in a certain city (in thousands of dollars) is 42, with a standard…

A: The formula for mean of the Z-score is, Z=x¯-μσn Here n is the sample size, μ is the population mean…

Q: mean number of customers arriving at a restaurant during a 15-minute period is 9. Find the standard…

A: Given that :   The mean number of customers arriving at a restaurant during a 15-minute period is 9.…

Q: Assume that women have heights that are normally distributed with a mean of 63.6 inches and a…

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Q: A researcher collects the distances between survey respondents and the closest grocery store. The…

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Q: A study conducted by the Center for Population Economics at the University of Chicago studied the…

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Q: A World Health Organization study of health in various countries reported that in Canada, systolic…

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Q: The cost of repairs for a fleet of motorcycles follows a normal distribution, with a monthly average…

A: Given Information: Mean value (u) = $ 1280  Standard deviation (s) = $ 420

Q: the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 70 miles…

A:

Q: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

A: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

Q: The mean height of males 20 years old or older is 69.1 inches with a standard deviation of 2.8…

A: given data x = height of 20 years old or older μ = 69.1  inchesσ = 2.8 incheskevin's height,x = 83…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 67…

A: Empirical rule is used in statistics and probability.

Q: An electronics manufacturing process has a scheduled mean completion time of 65 minutes. It is…

A:

Q: A bank loan officer rates applicants for credit. The ratings can be described by a normal model with…

A: Given: μ = ​200 σ = 50

Q: A particular fruit's weights are normally distributed, with a mean of 562 grams and a standard…

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

Q: A hiring manager rates a large pool of job applicants for eligibility for a job vacancy. The ratings…

A: Determine the value of rating score that separates the top 10% with the rest.   The value of…

Q: The shape of the distribution of the time required to get an oil change at a 20-minute oil-change…

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Q: Most water treatment facilities monitor the quality of their drinking water on an hourly basis. One…

A: Given that sample size is 49, sample mean is 8.42 and sample standard deviation is 0.16.

Q: The time it needs a communications worker to arrange a domestic phone call is normally distributed…

A: It is given that the mean is 50 seconds and standard deviation is 8 seconds.

Q: A radio station claims that the amount of advertising each hour has a mean of 17 minutes and a…

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Q: A community college Math instructor feels that the average age of community college students…

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Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: A sample of data is given as below:3, 5, 7. What is the standard deviation

A: The formula for sample standard deviation is,

Q: The heights of men aged 20 to 29 are normally distributed with a mean of 69.2 inches and a standard…

A: we have given that, the heights of men aged 20 to 20 are normally distributed with mean (mu) =69.2…

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: It is given that the mean is 241.2 and the standard deviation is 0.6.

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.