In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 61 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 40 and 82?

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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 year Martina graduated college, she got a job as an entry-level software engineer working for a…

A: GivenMean(μ)=57000standard deviation(σ)=3700starting salary (x)=65000

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Q: Joan’s finishing time for the bolder boulder 10k race was 1.85 standard deviations faster than the…

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Q: The following data represent the number of people aged 25 to 64 years covered by health insurance​…

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A: We have to find given score.

Q: The following data represent the number of people aged 25 to 64 years covered by health insurance​…

A: Solution Age Number (f) Midpoint (x) f*x x2 f*x2 25-34 27.3 29.5 805.35 870.25 23757.825…

Q: Doug has 1,000 bottle caps in his collection compared to Melissa's 2000 bottle caps. If the average…

A: Given,mean(μ)=1250standard deviation(σ)=500Doug bottle cap collection(X)=1000Melissa's bottle cap…

Q: Suppose that the lengths of pregnancies are normally distributed with a mean of 274 days and a…

A: The provided information is  µ=274 σ=10 P(X>280) P(X-µσ>280-27410)=P(z>0.6000)=0.2743 (from…

Q: Suppose that the distribution of scores on an exam is closely described by a normal curve with a…

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Q: Suppose the prevalence of type II diabetes in a community is 36%. Researchers want to sample 16…

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Q: A vending machine is designed to dispense a mean of 7.8 oz of coffee into an​ 8-oz cup. If the…

A: Let X be the random variable from Normal distribution with mean (μ) = 7.8 and standard deviation (σ)…

Q: Suppose that Sacramento workers have a mean commute of 17 minutes and commute times are normally…

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Q: The distribution of heights of adult Filipino is approximately normal with a mean of 69 inches and…

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Q: The following data are the grades of the EDA students in Engr. A. Determine the Mean, Mode, Median…

A: Given data is96, 84, 85, 72, 95, 74, 75, 88, 87, 98, 81, 79, 78, 76, 81, 99, 74, 75, 82, 81, 95, 94,…

Q: 20. For the data in the following sample: 10, 6, 8, 6, a. Find the mean and the standard deviation.…

A: 20. a. The mean of the sample is, x¯=∑ixin=10+6+8+6+55=355=7 Thus, the mean of the sample is 7. The…

Q: Suppose that prices of recently sold homes in one neighborhood have a mean of $265,000 with a…

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Q: In a recent awards ceremony the age of the winner for the best actor award was 34 and the age of the…

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Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

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Q: nd the mean and the median of the contents. he third value was incorrectly measured and is actually…

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Q: Ted had the lowest ERA​ (earned-run average, mean number of runs yielded per nine innings​ pitched)…

A: According to the given information in this question We need to find the z score

Q: The following are ages in years of nine employees of a large company. 46, 22, 35, 26, 22, 53, 33,…

A: The question is about measures Given : Data : 46, 22, 35, 26, 22, 53, 33, 42, 59   To find : Mean…

Q: The following are ages in years of nine employees of a large company. 46, 22, 35, 26, 22, 53, 33,…

A: Given: The sample data is: 46,22,35,26,22,53,33,42,59

Q: One year thomas had the lowest ERA​ (earned-run average, mean number of runs yielded per nine…

A: GivenThomas has an ERA of 2.67 and Sarah has an ERA of 2.99For males,For femalesTo find the z-score…

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Q: e following data represent the number of people aged 25 to 64 years covered by health insurance…

A: The formula to compute the sample mean is, The formula to compute population standard deviation is,…

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A: Given Mean=45 Standard deviations=5.25

Q: An economist wants to find out if there is difference in the monthly expenses of families from…

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Q: Suppose that the heights of 4-year old boys are normally distributed with a mean of 103cm and a…

A: Let X be the random variable from normal distribution with mean (μ) = 103 cm and standard deviation…

Q: The following data lists heights (in cm) of 10 kids at a pediatrician's office: 151, 139, 138, 137,…

A: Heights of 10 kids = 151, 139, 138, 137, 153, 148, 156, 161, 144, 168.The percentile is the child…

Q: In a bell-shaped distribution, 95 % of the data falls within 1 standard deviation of the mean.

A: Given that In a bell-shaped distribution, 95 % of the data falls within 1 standard deviation of the…

Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

A: normally distributed with a mean of  500μ=500 standard deviation of  100σ=100we have to find out…

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.