3. What does the shape of the box plot imply about the concentration of data? Use complete sentences. 4. Using the box plot, how can you determine if there are potential outliers? 5. How does the standard deviation help you to determine concentration of the data and whether or not there are potential outliers? 6. What does the IQR represent in this problem? 7. Show your work to find the value that is 1.5 standard deviations: above the mean. b. below the mean. a.

Q: According to the Empirical Rule, what percentage of the observations in a data set that can be…

A:

Q: The U.S. Department of Transportation provides the number of miles that residents of the 75 largest…

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Q: a. How large a sample is necessary? b. If management wants to be correct to within ± $25, how many…

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Q: Suppose that scores on the mathematics part of the National Assessment of Educational Progress…

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Q: A parent is hopeful that their son will score in the top 15% of a. dance competition. What score…

A: We have given that, The mean of the distribution is 28 and the standard deviation is 6.   Z-score =…

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A: From the provided information, Sample size (n) = 71 Sample mean (x̅) = 83 Sample standard deviation…

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Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

A:

Q: b. For a sample of engineers, the mean salary is $95,000 with a standard deviation of S30,000. The…

A: Given data: The mean of salary is m = $95000. The standard deviation is σ = $30000. The median…

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked (on average) an 80 hour…

A: Given that, Sample size of women n=67 Sample average x¯=83 Sample standard deviation s=10 It is been…

Q: How do I do question. 28

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Q: A test is normally distributed with a mean of 70 and a standard deviation of 8. (a) What score would…

A: a What score would be needed to be in the 58th percentile. Therefore, the score at 85th percentile…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A: Given :Population standard deviation = 2.8 daysCompany wants to be 95% confident that the true mean…

Q: Suppose you add 2 days to each datum in the duration of hospital stay. a. What is the effect on the…

A: Adding any term in every observation of the data change the median.  If we add 2 then 2 will be…

Q: The number of incidents in which police were needed for a sample of 9 schools in Allegheny County is…

A: d)Mid range=Maximum value+Minimum value2=3+482=25.5

Q: The life span of a brand of tireis normally di stributed with a mean of 50,000 miles and a standard…

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Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

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Q: The descriptive measures in a set of data are as follows: a sample mean of 50.24, a median of 49 and…

A: Following data is given, Mean =50.24, Median =  49, Standard deviation = 13.77.

Q: 2. A normally distributed set of 968 values has a standard deviation of 11 and a mean of 108. Which…

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Q: A marketing researcher for a phone company surveys 184 people and finds that the proportion of…

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Q: 3. Given the sample variance of a distribution, explain how to find the standard deviation.

A: Variance is the measure of dispersion that calculates the average of the squared difference from the…

Q: THIRD OPTION - Create your OWN 1. What is the data value associated with az-score of 0.4? 2. What is…

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

Q: 2. How is the sample size related to the deviation?

A: We have to define how sample size is related standard deviation

Q: 3. Assuming that you wished to have the highest possible score on an exam relative to other scores;…

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Q: The mean number of travel days per year for salespeople employed by three hardware distributors…

A: Sample size: Sample is the part of the population that will help us to draw the inference about the…

Q: Assuming that the heights of college women are normally distributed with mean 61 inches and standard…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

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A: Average score: The general formula to obtain the expected value (mean) of a discrete random variable…

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A: The standard deviation of a sample is calculated by summing the squared deviation of each data point…

Q: A scientist has read that the mean birth weight, μ, of babies born at full term is 7.3 pounds. The…

A: Given that a scientist has read that the mean birth weight, μ, of babies born at full term is 7.3…

Q: 4- Which one of these statistics measure is unaffected by outliers? а. Мean b. Median С. Standard…

A: Answer: Outliers are the extreme values in the data set. It can be extremely high or low values. A…

Q: A football coach claims that the average weight of all the opposing teams’ members is 210 pounds.…

A: Consider that μ is the true average weight of all the opposing teams’ members.

Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

A: a.We have to determine the percentage of observations in any data set that lie within six standard…

Q: In a statistics class, 10 scores were randomly selected and the following results were obtained: 74,…

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Q: b. Add another salary, $97,582. Calculate the mean median, and mode again. How does this new salary…

A: Given data: $44,751, $52,000, $41,500, $38,862, $51,380, $61,774 (b) Add another salary, $97,582.…

Q: Does the sample size have an effect on the standard deviation of all possible sample means? Explain…

A: Points on sampling distribution of the sample mean: If the true population distribution of a random…

Q: 1. Bob made 116 on his accounting midterm and 82 on his biology midterm. For the accounting midterm,…

A:

Q: In a statistics class, 10 scores were randomly selected, and the following results were obtained:…

A: Mean: It is the sum of the total observations divided by the total number of observations. Range: It…

Q: The mean annual wage per employee for each state and the District of Columbia for the year 2009 is…

A: The mean annual wage per employee for each state and the District of Columbia for the year 2009 is,…

Q: If the number of degrees of freedom for a chi-square distribution is 32, what is the population mean…

A: We have given that,  Number of degrees of freedom from chi- square distribution (df) = 32  Then, We…

Q: THIRD OPTION -Create your OWN 1. What is the data value associated with az-score of 0.4? 2. What is…

A: "Since you have posted a question with multiple sub-parts. We will solve the three sub-parts for…

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked (on average) an 80 hour…

A: As per honor code we will only answer first three parts. The sample size is greater than 30 and the…

Q: In a recent study on world​ happiness, participants were asked to evaluate their current lives on a…

A: X follows a Normal distribution with mean = 5.5 and S.D = 2.3 Then z=(x-mean)/SD = (x-5.5)/2.3…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Given information Hypothesized mean µ = 19 inches Sample size (n) = 49 Mean x̅  = 18.5 inches…

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

A: Given that  The distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5)…

Q: Which of the data sets shown below has the smallest standard deviation? 0, 1, 2, 3, 4, 5, 6 0, 0, 0,…

A: We have to find standrad deviation...

Q: hospital stay

A: Mean: It represents the average of the given collection of data. Median: Generally median represents…

Q: The providence health maintenance organization wants to establish a criterion for recommending…

A: Given Information Mean (µ) = 178.1 Standard deviation (σ) = 40.7

Q: 6. When the mean is used to measure the location of a set of observations, you would usually measure…

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

Q: Use technology to solve the following problem: the lifetime of a certain Tyler of automobile tire…

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.