The estimated distribution (in millions) of the population by age in a certain country for the year 2015 is shown in the pie chart. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set Use 70 as the midpoint for "65 years and over." Under 4 years: 20.9 5-14 years: 38.9 15-19 years: 19.4 20-24 years: 21.1 25-34 years: 47.4 35-44 years: 36.8 O 45-64 years 762 O 65 years and over 535 (Round to two decimal places as needed)

Q: In the diagram, about 68% of the scores fall within the shaded area, which is symmetric about the…

A: For 68%; Range can be given as Mean +/- SD

Q: The frequency distribution in the table represents the square footage of a random sample of 498…

A:

Q: A random sample of 6 vehicles on the highway had their speed checked. The speeds, in miles per hour,…

A: It is an important part of statistics . It is widely used .

Q: Each year, tornadoes that touch down are recorded. The following table gives the number of tornadoes…

A: The given data as follows: 3,2,54,123,209,96,70,89,61,55,114,102 Thus,  The minimum value of the…

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

A: Given that ; X represents the number of adults in groups of five who reported sleepwalking P(x) is…

Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A:

Q: Recently, a random sample of 13-18 year olds was asked, "How much do you currently have in savings?"…

A: From the given information: Savings ($) Frequency 0-199 345 200-399 91 400-599…

Q: The grades for 30 students on the most recent exam are given in the data table below: 90 60 60 80 90…

A: Median is the middle most value. For a set of n observations, x1, x2, ... , xn with frequencies f1,…

Q: Recently, a random sample of 13-18 year olds was asked, "How much do you currently have in savings?"…

A:

Q: The frequency distribution in the table represents the square footage of a random sample of 496…

A: Obtain the value of the sample mean footage   The mean is obtained below:   From the information,…

Q: The height, in inches, of each student in Megan's algebra class is shown. 72 72 71 70 70 70 69 67 66…

A:

Q: The table below gives the number of hours spent watching TV last week by a sample of 24 children.…

A: Given -  The given data are number of hours spent watching TV last week bye a sample of 24 children…

Q: The graph shows the distribution of the number of text messages young adults send per day. The…

A: Given,mean(μ)=128standard deviation(σ)=30

Q: Compute for the population mean, population variance and population standard deviation. The IQ of 8…

A:

Q: Find the stansard deviation of the data summerized in the given frequency distribution.  The test…

A: The formula for mean and standard deviation is given by,

Q: Square Footage Frequency 0–499 5 500-999 17 1000–1499 36 1500–1999 121 2000–2499 119 2500–2999 81…

A: From the provided information, The frequency distribution table is as follow: Square Footage…

Q: Hour Frequencies 10-14 8 15-19 28 20-24 27 25-29 12 30-34 4 35-39 1

A:

Q: Calculate the Arithmetic Mean, Deviation from Mean, Average Deviation, Standard Deviation and…

A: We need to calculate Arithmetic Mean, Deviation from Mean, Average Deviation, Standard Deviation and…

Q: The frequency distribution in the table represents the square footage of a random sample of 496…

A: Mean and the standard deviation is a descriptive statistic. To find the average value we use mean…

Q: Find the standard deviation for the grouped data. College Units Frequency 0-24 4 25-49 3 50-74 6…

A: Here we use simple method which is used to find deviation

Q: Which of the following is the best estimate of the standard deviation of the distribution in the…

A: The tip of the normal curve represents the mean So, Mean = 97 Now, Given values, μ-σ=88μ+σ=106

Q: n the distribution shown, state the mean and standard deviation. Hint: The vertical lines are 1…

A: The vertical line in the distribution shows the 1 standard deviation apart.

Q: A sample of weights (in pounds) for six 12-year-olds is given below:   100 76 92 79 84 90    Find…

A:

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

A: X: time spent by a teacher at work in the holidaysX~N(μ,σ)Mean(μ)=20 hoursstandard deviation(σ)=5…

Q: One aspect of the beauty of scenic landscape is its variability. The elevations (feet above sea…

A: We have given that,  The data set is,  901, 658, 577, 1360, 901, 1198, 820, 1090, 631, 658, 1306,…

Q: Assume that​ women's heights have a distribution that is symmetric and​ unimodal, with a mean of 67…

A: The following information has been given: The mean of women's height is μw=67 The standard deviation…

Q: figure the standard deviation of the distribution of means for a population with a standard…

A: Population standard deviation is given and sample standard deviations have to be calculated for…

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

A: See the handwritten solution

Q: Use a normal distribution table or a statistical calculator to answer this question. A farm…

A:

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

A: X X^2 P(X) XP(X) X^2P(X) 0 0 0.183 0 0 1 1 0.357 0.357 0.357 2 4 0.305 0.61 1.22 3 9 0.122…

Q: The weight of 100 female students aged from 15 to 20 years have a mean of 120 pounds and a standard…

A: Given information- Population mean, μ = 120 pounds Population standard deviation, σ = 6 pounds The…

Q: The shipment times in hours for a load of goods from a factory to market are tabulated in the…

A:

Q: A study is run to estimate the mean total cholesterol level in children 2-6 years of age. A sample…

A:

Q: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: Class  frequency (f) Mid vaue (x) f.x f.x2 0-199 342 99.5 34029 3385885.5 200-399 86 299.5 25757…

Q: The highway mileage (mpg) for a sample of 10 different models of a car company can be found below.…

A: Data in order  22, 24, 26, 27, 39, 43, 43, 46, 48, 49 Mode may be defined as the maximum number of…

Q: Recently, a random sample of 25–34 year olds was asked, "How much do you currently have in savings,…

A:

Q: A survey of 25 randomly selected customers found the ages shown (in years). The mean is 32.92 years…

A: .

Q: In Exercises, determine the range and sample standard deviation for each of the data sets. For the…

A: The data contains the number of tornados that touched down in the United States during each month of…

Q: Recently, a random sample of 13–18 year olds was asked, "How much do you currently have in savings?"…

A: Given, Savings  Frequency 0-199 347 200-399 98 400-599 62 600-799 20 800-999 12…

Q: Using your calculator, find the range and standard deviation, round to two decimals places! The…

A: Given data set: 85, 33, 60, 45, 53, 46, 58, 47, 22, 44, 71, 83, 62, 79, 43, 36, 56, 39, 65, 36, 81,…

Q: Using technology, find the range and standard deviation, round to one decimals place: The table…

A: Given data, 20 39 34 29 48 84 64 25 75 89 40 57 82 43 62 52 49 59 38 87 49 66 95 17

Q: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: Given data : Sr no classes Frequency 1 0-199 341 2 200-399 99 3 400-599 58 4…

Q: During July 2005, the seven most-visited shopping websites (with number of visitors, in millions)…

A:

Q: me height, in inches, of each student in Megan's algebra class is shown. 72 72 71 70 70 70 69 67 66…

A: As a general rule, the median, mean, and quartiles will be changed by adding a constant to each…

Q: In 2017, Americans spent a record-high $9.1 billion on Halloween-related purchases (the balance…

A: Number of students sampled = 16 therefore, Sample size = n = 16 The amount in dollars spent on…

Q: Use the range rule of thumb to estimate the standard deviation. Round results to the nearest tenth.…

A: From the given data we find the standard deviation using range rule thumb method.

Q: Assume that the mean length of all cell phone conversations in a certain country is 3.75 minutes and…

A: a).Let X be the random variable that denotes the length of cell phone conversation. Given, mean of X…

Q: Using your calculator, find the range and standard deviation, round to two decimals places: The…

A: List of formulae : Range = Maximum value - Minimum value Sample standard deviation : s = ∑x2-∑x2nn-1

Q: The weight of 100 female students aged 15 to 20 years have a mean of 120 pounds and a standard…

A:

Q: The following set of data represents how many times per minute a person looks at their cell phone,…

A: Solution: Let X be the number of times per minute a person looks at their cell phone. The given data…

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.