10 Assume the mean height of soldiers to be 68.22 inches with a variance of 10.8 inches. How many soldiers in a regiment of 1000 would you expect to be over six feet tall ?

Q: 1. Figure below shows the number of polo shirt sold by 5 different RTW boutiques. a. Illustrate the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

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: The results of an analysis for a certain sample is given: 20.1, 24.1, 23.5, 22.2, and 21.6. Find the…

A:

Q: Find  Variance and Standard deviation for the following data.  4,  4,  7,  11,  14.

A: Given sample xi is:  4, 4, 7, 11, 14  Sample size, n = 5   Sample mean can be calculated as:…

Q: For each set of data: Compute the following: a.) mean, median, and mode. b.) Compute the variance,…

A: Obtaining descriptive statistics for the first data set: The procedure to obtain descriptive…

Q: The distribution of heights for all American women aged 18 to 24 is bell-shaped, symmetric with a…

A: Given the distribution of heights for all American women aged 18-24 is bell-shaped and symmetric…

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities Find the…

A: From the provided information, The data values are as follow: 41, 40, 39, 32, 20, 17, 14, 11, 10.8,…

Q: 10. A study has shown 38% of adults have purchased a product online. A random sample of 250 adults…

A:

Q: Here is a sample of scores: 6, 8, 5, 1, 3, 7, 7, 10, 9, 4   A) What is the variance?  B) What is…

A:

Q: (a) The mean height of all adult American males is 69 inches (5 ft 9 in). A researcher wonders if…

A: We have to find out hypothesis..

Q: Calculate the range, the variance, and the standard deviation for data that was collected on SAT…

A: The range is the difference between the highest and lowest value of a data set. Range = 57 – 34 = 23…

Q: A random sample of 45 home theater systems has a mean price of $139.00. Assume the population…

A: Given that  Random sample size (n) =45 Mean price (x¯)= $139 Population standard deviation…

Q: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

A:

Q: Calculate the variance, standard deviation and standard error for set of data on weight of 25 goats.…

A:

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: Given data,   40, 38, 36, 28, 19, 18, 17, 14, 13.7, 12.3   The objective is to find range of the…

Q: The math grades of the 40 students in a class are given by the table X₁ 2 3 4 5 6 7 8 9 F₁ 1 3 5 6 9…

A: Solution-: Given data: xi 1 2 3 4 5 6 7 8 9 10 fi 1 1 3 5 6 9 8 2 3 2 We want to find (a)…

Q: An article in a Journal reports that 34% of American fathers take no responsibility for childcare. A…

A:

Q: Which of the following is NOT a measure of the spread or dispersion of a set of data?   a Standard…

A: The measure of dipersion is a measure that measures whether the data is uniformly distributed or…

Q: 4. Which of the following distributions has the larger mean? Which has the larger standard…

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

Q: Calculate variance, standard deviation and CV% from the following data. Weight of cultured tissue…

A: The measure of central tendency is used for the univariate data. The mean, mode, median, standard…

Q: Two samples, each with n = 5 scores, have a pooled variance of 40. What is the estimated standard…

A:

Q: The mean deviation of the data(1 * :2,9,9,3,6,9,4 from the mean is 2.23 3.23 O 2.57 O 3.57 O

A:

Q: What is the average score for those who say they are an employee who others can depend on with the…

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

Q: Construct the normal curve given the mean and standard deviation of a set of data. μ = 43.2, σ = 6.9

A:

Q: c) Find the mean and variance of flights delayed per hour.

A: The probability distribution is x p(x) x*p(x) x2p(x) 0 0.10 0 0 1 0.08 0.08 0.08 2 0.07…

Q: What is the sample variance and the sample standard deviation for this distribution? b.  If we had…

A: Given : n=60 , SS=240 Our aim is to find the sample variance and sample standard deviation.

Q: 6- The is a statistic that measures the dispersion of a dataset relative to its mean and is…

A: Variance, standard deviation: Variance and standard deviation are measures of dispersion. Variance…

Q: The math grades of the 40 students in a class are given by the table 1 2 3 4 5 6 7 8 9 X₁ F₁ 1 3 5 6…

A:

Q: take the following data and calculate the variance and standard deviation by hand 10 12 20 20 25

A:

Q: Which measure of spread is less affected by the addition of the extreme observation? A. Range B. IQR…

A: We have given that  Data Xi : 25 25 37 58 65 69 70 71 86 87 We have to calculate Range, standard…

Q: The smallest numeric value in a data set subtracted from the largest is the: a. variance. O b.…

A: We have to find the term which is the difference between the largest value and the smallest value.

Q: a. Compute the value of the variance. b. Determine the value of the standard deviation. C. Determine…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Highway driving speeds are normally distributed with a mean of 62.4 and a standard deviation of 10.6…

A: Given information- Population mean, µ = 62.4 Population standard deviation, σ = 10.6 We have given…

Q: The mean number of words per minute (wpm) typed by a speed typist is 133 with a variance off 144…

A: Given that , = 133, 2 = 144 So , = 12, n = 90 Let  be the mean of sample. = 133  =  /n = 12/90=…

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: The following data has been given: 42 41 39 31 20 19 16 12 11.7 10.6

Q: The table below shows the total number of workers-days lost to sickness during one week's operation…

A: The frequency distribution is as follows:

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: From given data:   a) Range of the sample data Range=Highest Value-Lowest Value=38-8.8=29.2 The…

Q: a. What is the difference between the weight of 5.47 lb and the mean of the weights? b. How many…

A: Given :   X-bar=1.819  , s=1.401 , highest weight=5.47 We want to answer the following :  a) What is…

Q: Calculate the standard deviation and variance of the data shown, to two decimal places 8.9 18.5 9.7…

A: Use the given data to form excel table:   x x-x¯ x-x¯2   8.9 -6.75 45.5625…

Q: Find the range and standard deviation of the set of data. 11, 9, 7, 11, 12 e

A: Given data, 11,9,7,11,12   Range=? Sd=?

Q: A factory produces sacks of flour, a sample of 14 pieces with the following weights are taken: Find…

A:

Q: D. Tell whether the distribution has a small or large variance E. Compute the actual variance and…

A: Answer:-----.                                     Date:----27/09/2021

Q: If the standard deviation is 9, then what is the variance? 3.

A: Variance is square root of standard deviation

Q: Find the range, the standard deviation, and the variance for a given samples.(Round non- interger…

A: Solution: The given data is 3, 5, 7, 8, 12, 20, and 25 The maximum value is 25 and the minimum value…

Q: 4. Base on the graphical representation you made, illustrate for the following: a. mean or expected…

A: We need to find mean , variance and standard deviation

Q: 1.3. Find the estimated standard error of the proportion if, in the sample of machines, 36 machines…

A: Given that a paper company has about 50 paper mills, which have a total of 600 machines. From…

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: Here we need to find the range from the given data set of annual salaries. We know that range is the…

Q: (a) What proportion of tests require more than 70 seconds to complete? (b) What proportion of tests…

A: Here use given pdf for probability and mean and Variance