There is an average of 4 accidents in a week on a major highway in the city. What is the standard deviation of the distribution? O a. 4 O b. 2 8 O d. 42

Q: The income distribution of officers of a certain company was found to follow normal distribution.…

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Q: The average travel time to work for a person living and working in Kokomo, Indiana is 17 minutes. I…

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Q: The heights of women have a symmetric distribution with a mean of 64 inches and a standard deviation…

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Q: For 5 year old children, the mean weight is 51.01 pounds with a standard deviation of 3.98 pounds.…

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: 10. Age of Senators The average age of Senators in the 108th Congress was 59.5 years. If the…

A: Given that Mean=μ=59.5 Standard deviation=σ=11.5 Find Z-score=(X-μ)/σ

Q: A data set is formed by recording the sums in 400 rolls of a pair of a dice. A second data set is…

A: Standard deviation:The standard deviation indicates by how much each observation differs from a…

Q: c.    What is the mean of the sample means? d.    What is the standard deviation of the sample means…

A: Let  Mu = population mean  X bar = sample mean n = sample size  Sigma = population standard…

Q: The average number of acres burned by forest and range fires in large New Mexico county is 4,300…

A: GivenMean(μ)=4300standard deviation(σ)=750

Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe…

A: It is given that the random variable follows a binomial distribution with n=6 and p=0.9.

Q: e a sample of 25 hamburgers and weigh them, we find that the mean is 0.57 pounds and the standard…

A: Given that  (a) sample size (n) =25     Sample mean (x¯) = 0.57 pounds     Standard deviation (s)…

Q: A uniform distribution is shown below: 1 9. What is the standard deviation of this distribution?…

A: From the provided information, The uniform distribution is as follow: X~U (a, b) Here a = 1 and b =…

Q: The weights of 60 females in a physical education class are normally distributed with a mean of 135…

A: Obtain the Z-score for the random variable X equals 150 The Z-score for the random variable X equals…

Q: The time spent by a teacher at work in the holidays is normally distributed with a mean of 20 hours…

A: Given: Mean = 20 Standard deviation = 5

Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe mig…

A: Given information: The percentage of people having severe migraine headaches is 90%. That is, p=0.90…

Q: In a normal distribution, 99.7% of the data fall within how many standard deviations of the mean? A.…

A: Solution-: In a normal distribution, 99.7% of the data fall within how many standard deviations of…

Q: A new extended-life light bulb has an average life of 750 hours, with a standard deviation of 50…

A: As per empirical rule approximately 68-95-99.74% data fall within 1-2and3sd of mean.

Q: There is an average of 4 accidents in a week on a major highway in the city. What is the standard…

A:

Q: A police radar gun is used to measure the speeds of cars on a highway. The speeds of cars are…

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Q: he scores of students on an exam are normally distributed with a mean of 424 and a standard…

A:

Q: s the standard deviation of the following data set?  State your result as a decimal value with two…

A: The table that shows the necessary calculation is depicted as: x x−¯x (x−¯x)2 1 -2.5 6.25…

Q: Calculate the standard deviation for the following sample of 4 observations. Individual Income 1. 62…

A: Below is the answer

Q: The distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A standardized memory test has a mean of μ=100 and a standard deviation of σ = 10. Answer the…

A: (c )   Obtain the scores that separate the middle 28%. The scores that separate the middle 28% is…

Q: The average full-time faculty member in a post-secondary degree-granting institution works an…

A: In a bell shaped distribution, 68% items falls within one standard deviation of mean, 95% items…

Q: The ages of employees in a certain company were bell-shaped with mean 28 and standard deviation 5.…

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Q: The heights of women have a symmetric distribution with a mean of 63 inches and a standard deviation…

A: It is given that the heights of women follows a normal distribution with a mean 63 inches and a…

Q: A data set of home sales prices in an area has an average selling price of $350,000 with a standard…

A: The z score for x = 390000 is calculated as:

Q: The scores of students on an exam are normally distributed with a mean of 335 and a standard…

A: We have to find quartiles.

Q: 1. A biologist found the wingspan of a group of monarch butterflies to be normally distributed, with…

A: Given: Mean= 52.2mm Standard deviation=2.3mm. We standard normal deviation.

Q: The heights of women have a symmetric distribution with a mean of 66 inches and a standard deviation…

A: Given dataMean = 66 inchesStandard deviation =2.5 inchesApplying empirical formula68% of data falls…

Q: A B. 1 Doctor visits 0. 1 2. Frequency 7. 149 121 4. 5 54 4. 450 110 12 8. 12 6. 10 8. 14 11 6. 12…

A: From the provided information, A B Doctor visits Frequency 0 7 1 149 2…

Q: What symbol is used for the standard deviation of a population? O a. X-bar O b.H O C. S O d. o

A: Standard deviation: The positive square root of the mean square of the deviations taken from the…

Q: "The weights of 1,000 children, in average, is 53kg with standard deviation of 11kg. Suppose the…

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Q: If the students make one more measurement using the same equipment and procedures, what is the…

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Q: The standard deviation of the given data is A. 1.4495 B. 1.4597 C. 2.1011 D. 2.1307

A:

Q: Builtrite Furniture has calculated the average weekly payroll to be $15,000 with a standard…

A: Mean = 15000 Standard deviation = 3000 P-value = 0.04

Q: The scores of students on an exam are normally distributed with a mean of 403 and a standard…

A:

Q: an gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: What percentage of a population typically lands within two standard deviations of the mean under a…

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Q: What is the standard deviation of the distribution in Table 1? Round your answer to the nearest…

A: Solution: Let X be the number of slam dunks. The probability function for X is calculated as…

Q: Calculate the standard deviation of the data shown, to two decimal places 6.3 28.2 24.9 23.7 5.7 2.7…

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Q: Suppose a normal distribution has a mean of 79 and a standard deviation of 7. What is P(xs 93)? O A.…

A:

Q: The standard deviation of the given the data {14, 13, 16, 9, 3} is +

A: As per our guidelines we are suppose to answer only o ne question1)Given data set14,13,16,9,3sample…

Q: Suppose the heights of the members of a population follow a normal distribution. If the mean height…

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Q: The mean of a distribution is 50 and the standard deviation is 6. Using the empirical rule, find the…

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Q: Which symbol is used for standard deviation of the population? O b. a O c.o o d.o?

A: We have given that,  Which symbol used for standard deviation of the population?  We have to check…

Q: If you draw a sample of 200 from a normal distribution and using the empirical rule; how many data…

A: Empirical rule: On a normal distribution about 68% of data will be within one standard deviation of…

Q: The average weight of dogs that come to a certain vet's office is 55.6 pounds, with a standard…

A: Solution-: Given: μ=55.6,σ=2.2 We find, P[dog weight more than 60 pounds]=?

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: From the provided information, Mean (µ) = 65 inches Standard deviation (σ) = 2.5 inches

Q: The three data sets have the same mean and range, but is the variation the same? Prove your answer…

A: For all the parts, it is given that, x=5+7+9+11+13+15+177=777=11