The annual salaries of a group of employees are given in the following table: Salaries '000) : 45 50 55 60 65 70 80 75 Number of persons 8 4 Calculate the standard deviation of the salaries.

Q: Calculate the standard deviation from the data given below : Size of item Frequency Size of item…

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Q: If the average age of retirement for the entire population in a country is 60 years and the…

A: Empirical rule: The probability of the observation lies within 1 standard deviation of the mean,…

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Q: Calculate the standard deviation of the data. 7 11 8 12 4 6 2 15 7 8

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

Q: Find the standard deviation of the given data rounded to the nearest hundredth. 3, 4, 5, 7, 10, 12,…

A: Given data is3,4,5,7,10,12,15sample size(n)=7

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A: The distances from the workplace (in miles) for the 5 employees of a small business are given as:…

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Q: Calculate the standard deviation from the data given below : Size of item Frequency Size of item…

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Q: Suppose the people living in a city have a mean score of 40 and a standard deviation of 7 on a…

A: As per guidelines, we will only solve first three subparts, please repost other questions for more…

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Q: find the V av iance and St andard deviation

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Q: Calculate standard deviation from the following data. Marks Frequency | 6 0-10 10-20 20-30 30-40…

A: Class Interval Frequency, f Midpoint, x fx x2 fx2 0-10 6 5 30 25 150 10-20 8 15 120 225 1800…

Q: Calculate the standard deviation of the data shown, to two decimal places 16.1 18.5 19.3 14.4 3.9…

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Q: Find the range and standard deviation of the set of data. 11, 10, 5, 12, 12 O

A: The detailed solution is as follows below:

Q: On this assignment, round all answers (when necessary) to exactly three decimal places. The numbers…

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Q: Calculate the standard deviation from the data given below : Size of item Frequency Frequency Size…

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Q: 9. The mean July daily rainfall in Waterville is 10 mm and the standard deviation is 1.5 mm. Assume…

A: Consider a random variable X which represent that amount of daily rainfall in Waterville in the…

Q: The following data are the percentages of alcohol in five randomly selected brands of beer. Find the…

A: Given: Sample size n = 5 Formula Used: Population standard deviation  σ = ∑i=1n(Xi-X)2n Where X is a…

Q: I have no clue..

A: Given data and calculation for the mean and standard deviation is shown below

Q: Suppose the people living in a city have a mean score of 40 and a standard deviation of 7 n a…

A: We have given that  Mean=mu=40  Standard deviation=sigma=7

Q: In a mango farm of 250 trees, the mean harvest is 96.5 kilos of fruit per tree with a standard…

A: Given,sample size(n)=250mean(μ)=96.5standard deviation(σ)=8.4

Q: Here are the number of hours that each of a group of students studied for this exam: 2 4 22 2 1 4 1…

A: Solution Number of samples (n) = 10 Let "X" be the number of hours that each of a group of students…

Q: The annual salaries of a group of employees are given in the following tables: Salaries (in $ '000)…

A: x Frequency (f) f⋅x f⋅x2 45 3 135 6075 50 5 250 12500 55 8 440 24200 60 7 420 25200 65 9…

Q: Find the mean absolute deviation for the data in the table. Round to the nearest tenth if necessary.…

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Q: Find a 95% CI on the population standard deviation of speeds of drivers ticketed in a 55 mph zone…

A: Confidence interval population standard deviation :  A confidence interval is an statistical…

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Q: Q 1-From the following data, calculate Standard Deviation marks 15 25 35 45 55 No. of student 10 20…

A: Given data is Marks No. of students 5 10 15 20 25 30 35 50 45 40 55 30

Q: Find the standard deviation, s, of sample data summarized in the frequency distribution table below…

A: Given: Interval Frequency 30-39 1 40-49 3 50-59 8 60-69 3 70-79 15 80-89 31 90-99…

Q: Find the range and standard deviation of the set of data. 12, 10, 5, 13, 15 O

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Q: A homeowner has 5 zucchini plants in her garden. Over the course of the season, the yields (number…

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Q: The following are that scores of 20 students who took a calculus exam. Find the mean and standard…

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Q: Assume Springfield house prices are Normally distributed with a mean of $415,000 and standard…

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Q: The Following are the scores of 20 students who took a calculus exam. Find the mean and standard…

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Q: Suppose the people living in a city have a mean score of 35 and a standard deviation of 9 on a…

A: A normal distribution has a bell shaped which is centred at mean. The standard normal distribution…

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Q: Assume blood glucose levels are normally distributed with a mean of 80 mg/dL and a standard…

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A: Given Information:

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Q: The following data give the speeds (in kilometer) as measured by radar of 5 selected cars traveled…

A: The data shows the speeds (in kilometer) as measured by radar of 5 selected cars traveled at NLEX.

Q: Assume that the Leaf Area Index over a management area is normally distributed with a mean of 3 and…

A: Sample mean = M = 3 Standard details = s = 0.2

Q: The ratio of weight of the students is as follows in table - 1. Find the standard deviation of the…

A: Standard deviation of ungrouped data is σ=1n∑n=1nxi-x2.

Q: Calculate the standard deviation of the data shown, to two decimal places 3.5 21.1 7.7 16.5 22.8…

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Q: The following table gives the number of finished articles turned out per day by different number of…

A: Solution is given:

Q: Find the standard deviation for the group of data items. 5,5,5,5,7,9 ​(Simplify your answer.…

A: Solution:Computation of standard deviation:Standard deviation for the group of data items is…

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

A: Given data : Sr no classes Frequency 1 25-34 20.6 2 35-44 36.7 3 45-54 33.2 4…

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 selling price of a new car is normally distributed with an average of $19110 and a standard…

A: Let X denotes a selling price of a new car. Here, X follows normal distribution with mean value of…

Q: The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a…

A: Given: μ=8, σ=2 The corresponding z-values needed to be computed are: The probability that the item…