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 dally requests is bell-shaped and has a mean of 40 and a standard deviation of 6. Using the 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 28 and 40? Do not enter the percent symbol. ans = 96

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A: Obtain the weight represents the 5th percentile. The weight represents the 5th percentile is…

Q: Find the time it takes the fastest 24.2% of the college students to find a parking spot in the…

A: The length of time it takes college students to find a parking spot in the library parking lot…

Q: What is the standard deviation on the graph ?

A:

Q: According to data for a​ population, 3-year-old boys have a mean height of 38 inches and a standard…

A: given data normal distributionμ = 38 inchesσ = 2 inchesfor x = 42 inchespercentile = ?

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

A: Obtain the 90% confidence interval for the population mean.   The 90% confidence interval for the…

Q: The Stanford-Binet IQ test is scaled so that scores have a mean of 100 and a standard deviation of…

A: Let "X" be the Stanford-Binet IQ test

Q: Find the standard  deviation of 1.2, 2.7, 5.3, 3.4, 4.1, 4.6, 3.3, 2.7,  3.3, 2.6

A: Here we have to find, The standard  deviation of 1.2, 2.7, 5.3, 3.4, 4.1, 4.6, 3.3, 2.7,  3.3, 2.6.…

Q: Steel rods are manufactured with a mean length of 27 centimeter​ (cm). Because of variability in the…

A: Given,mean(μ)=27standard deviation(σ)=0.06

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: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 262 days…

A:

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A:

Q: Define "Standard Deviation" and also Find out the Standard Deviation of the given data: 86, 37, 21,…

A: Definition: Standard deviation is a measure of the amount of variation or dispersion of a set of…

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

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Q: The mean BMI score for dieters on the Jenny Craig weight loss program is 38.5, and the standard…

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Q: Surveyors measured the number of cars that go through the intersection of Howard Street and Stadium…

A: Given that  Mean=Xbar=900.3 Standard deviation=sigma=17.35

Q: The stature of men is normally distributed, with a mean of 69.0 inches and a standard deviation of…

A: From the given information, the mean of women is 63.6 inches and standard deviation is 2.5 inches.…

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

A:

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: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Assume that the hourly cost to operate Saint-Martin Hyundai bus follows the normal distribution with…

A:

Q: The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvanla has a bell-…

A: Empirical rule :  According to empirical rule ,  1) 68% of data falls within the first standard…

Q: The luggage weight for individual air travelers on some specific route have a mean of 80 pounds and…

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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…

A:

Q: The Challenger Disaster. In a letter to the editor that appeared in the February 23, 1987, issue of…

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Q: The Acme Company manufactures widgets. The distribution of widget weights is bell shaped. The widget…

A: X has distribution of widget weights is bell shaped. mean(μ)=40 ounces  and   standard…

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: The heart rate of humans are normally distributed with a mean of 90.3 bpm and std. dev. of 7.3 bpm.…

A:

Q: As a group, the Dutch are among the tallest people in the world. The average Dutch man is 184 cm…

A: For the distribution of the height of Dutchmen (which is specified to be approximately normally…

Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…

A: The detailed solution is as follows below:

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

A: Introduction Each possible situation of a random phenomenon is indicated by the probability…

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A:

Q: Suppose that annual precipitation is normally distributed, with mean 50 inches, and standard…

A: Obtain the 65th percentile of the precipitation distribution. The 65thpercentile of the…

Q: A particular fruit's weights are normally distributed, with a mean of 492 grams and a standard…

A: Solution: Let X be the particular fruit’s weight. From the given information, X follows normal…

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: The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1300…

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

Q: maintenance department at the main campus of a large state university receives daily requests to…

A: It is given that  Mean = 49 Standard deviation = 10

Q: e maintenance department at the main campus of a large state university receives daily requests to…

A: Let X represent the random variable   Mean=59 SD=5

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Given that the mean is 35 minutes and standard deviation is 12 minutes. That is, μ=35 and σ=12 Let…

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.