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 58 and a standard deviation of 11. Using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 36 and 58? Do not enter the percent symbol. ans = Submit Question %

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A: Given : Sample size, n = 50 Here the sample size is greater than 30 , the data can be approximated…

Q: A drug was tested on one hundred and fifty patients of which thirty patients respond to the…

A: Given information: A drug was tested on 150 patients. Among 150 patients, 30 patients are responded…

Q: The average age of our class is 22.3 years.  The standard deviation is 4.7 years.  If the variable…

A: Solution: Let X be the average age of class has normal  distribution  with mean μ=22.3 years and…

Q: udnury's bowling ball factory in llinois , in pounds, of 9 of the bowling balls produced that day…

A: See the handwritten solution

Q: Test scores for a history class had a mean of 89 with a standard deviation of 8.9. Suppose a student…

A: According to the given information, we have Mean = 89 Standard deviation = 8.9 Raw score = 67

Q: Carol-Anne is an environmental scientist studying the heights of red oak trees in a nearby marsh and…

A: It is given that the researcher randomly selected 10 red oak trees from each habitat and records the…

Q: Identify the data value corresponding to the indicated percentile. The heights of women are normally…

A: According to the provided information,

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: Suppose that resting pulse rates of adult males are normally distributed with a mean of 72 beats per…

A: The following information has been provided: Let X be a random variable represents the resting pulse…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: Given that: Z is standard normal Distributed with i.e. mean µ =0 and standard deviation σ =1 now…

Q: The heights of 10 year old American children are normally distributed with a mean height of 4 feet…

A: Given that.   X~N( μ , ?)   μ=52 , ?=4.75   Z-score =( x - μ )/?

Q: Heights for 16-year-old boys are normally distributed with a mean of 68.3 in. and a standard…

A: Given information: μ=68.3, σ=2.9 The P-value for the 96th percentile = 0.96 Determine the z-score…

Q: Suppose the movie theatre box office of a new film to be released is predicted to follow a Normal…

A:

Q: The heights of a 10 year old American children are normally distributed with a mean height of 4 feet…

A: Given, Mean m = 51 Standard deviation sigma = 4.25

Q: Find the standard deviation if the mean = 2, mode = 5, variance = 56 . Round your answer to three…

A: We have given that,  Mean (x̄) = 2 , mode (z) = 5 and variance        (s^2) = 56 Then,  We will find…

Q: Provide an appropriate response. A manufacturer claims that the mean lifetime of its fluorescent…

A:

Q: A survey of 21 accountants finds that they spend a mean of $45.00 each week on lunch with a standard…

A: The provided data is,

Q: Using a spectrophotometric analytical technique, the glucose concentrations in a patient with mildly…

A: Given that  The data are 16.67, 16.66, 16.64, 16.30, 16.31, 16.70

Q: Solar earned a score of 940 on a national achievement test. The mean test score was 850 wth a…

A: Given that  Solar earned a score of 940. The test scores are normally distributed. Mean test score…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A:

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: GivenMean(μ)=1457standard deviation(σ)=315

Q: The heights of tomato plants are Normally distributed with a mean of 3.56 feet and a standard…

A: Given Mean =3.56 Standard deviation=0.25

Q: A race director is preparing for an upcoming marathon and estimates that the mean time to finish is…

A: Here, μ=308 and σ=54

Q: he quantitative subset of the Graduate Record Exam (GRE) has a mean of 500 and a standard deviation…

A: Given data population mean (μ)= 500populatiion sd(σ) = 100sample size(n) = 64sample mean ( x¯ )=…

Q: A. What percentage of students in the sample had a GPA above 3.39? B. Sketch a box plot for this…

A: A) The third quartile, represented as Q3, is the number such that 75% of the observations are less…

Q: Suppose the heights of women at a college are approximately Normally distributed with a mean of 65…

A: The objective of this question is to find the height that corresponds to the 40th percentile in a…

Q: The length of songs in the Big Hair playlist of a Statistics professor's mp3 player varies from song…

A: a) The probability that the next song to be played is between 3.9 and 4.85 minutes long is 0.5321.b)…

Q: In a recent study, the serum cholesterol levels in men were found to be normally distributed with a…

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

Q: Find the standard deviation of the following values: 2.58x10-5, 2.33x10-5, 3.28x10-5, 3.57x10-5

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults doors, and those…

A: Here we need to find the indicated iq score.

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: Solution-: Given: μ=263 days, σ=13 days We want to find what range would you expect to find the…

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A: The provided information are: X=77.8 Sample size=n=50 mean=μ=16.56 Standard deviation =s=35.08 To…

Q: The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard…

A: Given  Population mean μ=98.6, standard deviations σ=0.27, P(X<a)=0.95 Find a

Q: Find the indicated IQ score.

A: Let X denote the IQ scores of adults. Given that X follows N(mean = 100, SD = 15)