Discussion: Students will measure the height of their 5 friends in inches and calculate the mean and standard deviation.

Q: According to the empirical rule for population data that form a normal distribution, what percentage…

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Q: In a memory test, the test subjects are shown 625 objects and are asked after two hours to name the…

A: Given,          sample size n=625           sample proportion P∧=80%=0.80       A)    Mean=P∧…

Q: 4. The lowest and the highest data value of a data set are 12 and 28 respectively, then the…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Salespeople for a car sales company have an annual sales average of $225,000, with a standard…

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Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

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Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

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Q: Find the mean and the standard deviation for these ages. b) Draw the boxplot and explain what it…

A: When the data is provided , we can give insight to the data by doing certain plots . Also by…

Q: What do standard deviation, range, and IQR tell us about a data set? O They tell us how many points…

A: What do standard deviation ,range,and IQR  tell us about a data set  ?

Q: If the variance of the data values in a population is 169, what is the standard deviation of the…

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Q: Briefly explain what is measured by the standard deviation and what is measured by the variance?

A: The variance calculates the average degree to which each point is different from the mean-the…

Q: Biology A biologist found the wingspans of a group of monary butterflies to be normally distributed…

A: a) Given that, the value of mean is μ=52.2 and standard deviation is σ=2.3. Obtain the percent of…

Q: What percent of the distribution is included within 1.75 standard deviation? please answer…

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Q: population consists of values 4, 8, 12, and 16. What is the standard deviation? (approximate value)…

A: Given sample values - 4, 8, 12, 16 Size  = N = 4  Mean =  μ=∑xN=4010=4

Q: What is the mode of the data?  d. What is the standard deviation of the data?

A: Given Frequency table, Class Interval Frequency Relative Frequency 1 to 5 3 3 6 to 10 4 7…

Q: how woud you go about finding the standard deviation for the given data.  196 205 215 185 229 278…

A: For the given data, standard deviation can be obtained as follows.Mean: Arithmetic mean is the…

Q: Find the mean and standard deviation for the individualized instruction scores. Scores…

A: Solution-: We find the mean and standard deviation for given frequency distribution table

Q: Grades are assigned according to where the student's average is located in the diagram below. If the…

A: There are different ways to solve a statistical problem.

Q: Find the mean absolute deviation of the data set given below. 20, 30, 50, 80, 20 Write the correct…

A: Given set, 20,30,50,80,20 Therefore,  n= 5 (I.e, number of terms)

Q: A z-score tells us how many standard deviations a score is from the mean. What is another word for…

A: Measure of central tendency measures the central value of a dataset. Measured of dispersion measures…

Q: What raw score does he need to get the certificate

A: Given that Mean = 83 And SD = 3.2

Q: Q) Estimate Median, Mean and standard deviation

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Q: Find the mean, median, mode and standard deviation

A: Given: 11 13 11 15 11 14 12 12 13 15 10 11 10 14 15

Q: When describing a histogram, what are the three attributes we report? O mean, median, mode center,…

A: To find: When describing a histogram, what are the three attributes we report?

Q: how do you find standard deviation? how many bars should you have for a standard deviation? do you…

A: Introduction:The standard deviation of a set of observations is the square root of the average of…

Q: Emily's chicken ranch has 9 hens.  The number of eggs that each has laid in the past week follows:…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: Which would you expect to be the larger standard deviation: a. The standard deviation of the weights…

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Q: Using your calculator, determine 2.1 the standard deviation 2.2 the variance 2.3 the mean.

A: Let x denotes the number of passengers and f denotes the frequency.

Q: class, test, the mean is 85 and the standard deviation was 7.5. grades. conciuded Grade Upper 5% 10%…

A: Solution: Given that:  μ= 85 Population mean of the testσ= 7.5  Population standard deviation of the…

Q: A population has mean 52 and standard deviation 8. What is the data value that has a z-score of -3 ?…

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Q: I am not familiar using the standard deviation formula for my statistics class

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Q: Find the mean: Find the median: Find the sample standard deviation:

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Q: Explain why we need to square the deviations from the mean in our calculation of the standard…

A: 3) The deviation formula is, Deviation=Xi-Mean In the formula Xi is individual scores.

Q: Biology A biologist found the wingspans of a group of monary butterflies to be normally distributed…

A: Given: Mean, μ=52.2 mm Standard deviation, σ=2.3 mm The objective is to find the percentage of…

Q: NCAA Scholarships. The NCAA estimates that the yearly value of a full athletic scholarship at…

A: GivenMean(μ)=19000standard deviation(σ)=2100

Q: 2. What percent of values of a normally distributed variable lie between the mean and two standard…

A: Given: Let X be the random variable X~ Normal ( μ, σ2)

Q: Christopher is 6' (72") tall.  The population mean height for men in the United States is 5' 10"…

A: Let X be the height for men in inches.Here,X~N(70,32),i.e.,X~N(70,9).Let x be the value of…

Q: Annual Precipitation (Inches) Stem Leaf 0 6 1 9. 2| 127 3 356 434 5 036 6. 68

A: From Given stem and leaf  plotThe data values…

Q: Theweight,inkilograms,ofcerealinaboxcanbemodelledbyanormaldistributionwithMean μ and standard…

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Q: Given the data set below. Find the mean, median, mode, range, sample variance, and sample standard…

A: Given data is:

Q: ow many TV sets? A survey organization sampled 63 households in a community and found that the…

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Q: Determine the class average if the standard deviation was 8% and Henry’s mark of 85% is equivalent…

A: Given that,  The standard deviation =8%, Marks of Henry's =85%, and z-score =1.30.

Q: What is the minimum percentage of data values that will come within 3.5 standard deviations from the…

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Q: Task: Consider a population consisting of the following data: 3, 5, 7, 9. 1. Solve for the…

A: Hi, thank you for the question. As per our company guideline we are supposed to answer only first 3…

Q: Uise the information in Table 104 and estimatệ the standard deviation for adult WAIS R scores se at

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

Q: List the standard deviations in ascending order.In which measurement is the standard deviation…

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Q: In Exercise, we have provided simple data sets for you to practice the basics of finding measures of…

A: (a)The range of the data set is the difference between maximum value and minimum value. So the range…

Q: Biology A biologist found the wingspans of a group of monary butterflies to be normally distributed…

A: Given Data: Let X represent the random variable Mean=52.2 SD=2.3   X~ Normal (52.2, 2.32)

Q: z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6…

A: According to the provided information,

Q: A population consists of all the weights of all defensive tackles on a university’s football team.…

A: Enter the data in EXCEL as shown below.

Q: a) Calculate the mean, median and mode distances for each archer? Mean Median Mode Lionel Jeffrey b)…

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