Find the number of boys and the combined standard deviation

Q: Find mean and standard deviation of 1500 males

A: Assume, x be the random variable representing the heights in inches. x be the mean value of x. s be…

Q: What

A: Explanation and solutions is given below....

Q: the variance and standard deviation are based on the________________?

A: Variance, standard deviation and mean deviation:Variance is the average of squared difference of…

Q: A quiz consists of 20 true or false questions. If the student guesses on each question what is the…

A: Solution: Let X be the number of correct answers and n be the number of questions. Since the…

Q: compute for the mean, variance and standard deviation.

A: Here given, Three paper bills are drawn in succession without replacement from a piggy bank. Piggy…

Q: What is the formula for STANDARD DEVIATION FOR POPULATION?

A: The standard deviation for population is indicated by the symbol (σ)

Q: what if the standard deviation was 30, instead of 60

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Q: The Sum of Squared Errors for a data set of 18 numbers is 36. What is the standard deviation?

A:

Q: A coin is tossed 16 times, and the number of heads is counted. What is the standard deviation for…

A: Given that,Sample size (n) = 16

Q: Calculate the sample mean and the sample standard deviation to the nearest hundreths.

A: Given: X 0.5 1.75 2 2.25 2.25 2.5 2.75 3.25 3.75 3.75 4.25 4.25 4.25…

Q: What is the mean reading? What is the standard deviation?

A: A function f(x) is said to be a probability density function if f(x) ≥ 0 and ∫f(x)dx = 1. Consider…

Q: A history class has 95 members. If there is a 22% absentee rate per class meeting , find the mean…

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Q: Calculate the standard deviation

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Q: find the standard deviation

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

Q: What is the difference between standard deviation and mean?

A: Standard deviation: The standard deviation is based on how much each observation deviates from a…

Q: ) Approximate the mean and standard deviation for temperature.

A: (a) The mean for temperatures is, Temperature Days(f) Midpoint(x) fx 50 - 59 4 54.5 218 60 -…

Q: If a data set has a mean of 80 and a standard deviation of 10, calculate + 1.5 standard deviations

A: Here, the data set has a mean of 80 and a standard deviation of 10.

Q: Write the steps of calculating the population standard deviation.

A: Standard deviation: The standard deviation is based on how much each observation deviates from a…

Q: in a group of 230 tests, how many students score within one standard deviation of the mean?

A: The probability that the students score within one standard deviation of the mean will be:…

Q: The weights, in pounds, of a group of dogs are:          18, 31, 22, 46, 55, 28.    Calculate the…

A: Given Data The weight of a group of dogs are: 18,31,22,46,55,28   The size of group is N=6   The…

Q: A department store has daily mean sales of $ 28,372.72. The standard deviation of sales is $2000. On…

A: Given information- Mean sales, μ = $ 28,372.72 Population standard deviation, σ = $2000 Tuesday’s…

Q: Calculate the correct mean and standard deviation.

A: Here use standard deviation and mean formula

Q: If the standard error,  of a sample data set is 5 and the standard deviation,  of the distribution…

A: For a population with mean µ  and standard deviation σ, the standard error is σx̅ = σ/√n, where x̅…

Q: Find variance and standard deviation

A: From the given data we have the computations as, Class boundaries Xi Frequency (fi) fiXi…

Q: what is the mean and standard deviation?

A:

Q: How is standard deviation a measure of distance?

A: We know that the standard deviation is the measure of the dispersion of data which is based on…

Q: Define the term standard deviation?

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

Q: Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the…

A: -2 standard deviation is given by, (Mu-2sigma)= 70  Mu+2sigma= 100 Where mu is mean and sigma is…

Q: PROVIDE TYPED ANSWER  What is the mean age among men? What is the standard deviation (SD) of age…

A: A table with demographics, disease traits, BMI for all men and women are given.Also,Level of…

Q: What is the lowest standard deviation value ?

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

Q: Find the mean and standard deviation interpretation

A: * SOLUTION : -   * Given that,

Q: Calculate The mean and standard deviation

A: Given Information :  On the midnight shift, the number of patients with head trauma in an emergency…

Q: Can you find the mean and the standard deviation?

A: To find the mean and standard deviation of the given data: Mean is the sum of observations divided…

Q: Find the mean and standard deviation

A: Uniform Distribution :  The uniform distribution is a type of continuous probability distribution…

Q: What is the standard deviation?

A: We have to calculate the SD for the given frequency distribution.

Q: Explain the standard deviation?

A: Standard deviation: Both the standard deviation and the variance are based on how much each…

Q: Determine the mean and the standard deviation.

A: We have Given a binomial Distribution that is our random variable X~b(n,p) with parameter n=50,…

Q: An agronomist measured the height of 134 canola plants. The mean height was 214 cm and the standard…

A:

Q: A successful basketball player has a height of 6 feet 77​inches, or 201201 cm. Based on statistics…

A: Given information- Height of a player = 201 cm Z-score = 3.743 We know that standard height is given…

Q: After calculating the mean and standard deviation, how do we interpret the result, and when a…

A: The mean is a measure of central tendency and the standard deviation is a measure of dispersion in…

Q: 4. The variance of a data set is 3410.56. Find the standard deviation for the data set.

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Q: What does the standard deviation tell you about a set of data?

A: Given To explain the standard deviation tell you about a set of data.

Q: Calculate the mean if -2 standard deviation = 70 and +2 standard deviation = 100. The mean of the…

A:

Q: Find the variance and standard deviation

A: For n number of observations on a variable X such that x1, x2, ........ , xn , the mean and variance…

Q: A successful basketball player has a height of 6 feet 3 ​inches, or 191 cm. Based on statistics from…

A: Given,a basketball player has a height of 6 feet 3 inchesand the Z-score =2.31

Q: What does a mean of 9.1429 and a standard deviation of 2.5455 tell you

A: We have given that a mean of 9.1429 and a standard deviation of 2.5455.

Q: Find the mean, standard deviation, and relative standard deviation for the set of measurements (7,…

A: Mean: The mean value is calculated as follows: The sum of the observations is divided by the number…

Q: What is the Standard Deviation?

A: You want to know about standard deviation.We will deeply understand the meaning of standard…