1 The number of workers employed, the mean wage (in Rs.) per month and standard deviation (in Rs.) in each section of a factory are given below. Calculate the mean wages and standard deviation of all the workers taken together. Mean wages Standard deviation (in Rs.) Section No. of workers employed (in Rs.) A 50 11130 600 11200 700 B 60 11150 800 C 90

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: College students average 7.8 hours of sleep per night with a standard deviation of 40 minutes. If…

A:

Q: The salaries of a company's employees are normally distributed with mean 15000 and standard…

A:

Q: College students average 7.4 hours of sleep per night with a standard deviation of 45 minutes. If…

A: Given data  college students average 7.4 hrs of sleep with standard deviation of 45mins

Q: on jan 15 the temperature is 4 degre standar deviation above the mean what is temperature on jan 15

A: Given that Mean temperature = 16 And SD = 0.5 Let x denote the temperature on Jan 15.

Q: Researchers measured the waist sizes of 230 men in a study on body fat. The true mean and standard…

A: Suppose researchers measured the waist sizes of  men in a study on body fat. The true mean:…

Q: The heights of women in a particular community are normally distributed with a mean of 65 inches and…

A: We have to find given proportion..

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: The mean and variance of population with sample size is 100 is 20 and 4 respectively.Calculate the…

A:

Q: IQ scores are normally distributed with a mean of 100 and standard deviation of 15. What is the…

A: GivenMean(μ)=100standard deviation(σ)=15

Q: Birth weight, in grams, of newborn babies are normally distributed with a mean of 3290 grams and a…

A: Mean=3290gmStandard deviation =520gm

Q: How does one calculate the standard deviation?

A:

Q: Approximate the standard deviation of age for males. I already know that the population mean is…

A: Given data table is,Agemalesfemales0 - 910510 - 1910720 - 29171630 - 39181640 - 49212250 - 59232560…

Q: Find z score  Xbar= 20 ,mean= 40 , standard deviation = 10

A: Given that Xbar= 20  mean= 40  standard deviation = 10 We have to find z score:

Q: Find the range, sample standard deviation and inter-quartile range (IQR) of the following data set.…

A: Given data set is 23,26,45,51,54,54,60,65,83,97sample size(n)=10

Q: Pulse rates of women have a normal distribution with a mean 75 and a standard deviation of 8. What…

A: Let "X" be the pulse rates of women.

Q: Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Heights in a supopulation of 100 people are normally distributed with a mean of 180 centimeters and…

A: # Height of people follow normal distribution with mean=180 cm and standard deviations=10 cm  Then…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Mean =7, median =10, standard deviation =3 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 7 median = 10  and standard deviation = 3

Q: LED lamp has a mean usage of 750 hours with standard deviation of 50 hours. If LED lamp usage is…

A: Provided information is,  A LED lamp has a mean usage of 750 hours with standard deviation of 50…

Q: The scores on the final exam in a statistics course are close to being normally distributed. The…

A: Normal distribution: It is a continuous probability distribution, that is bell-shaped with lighter…

Q: Weights of incoming college freshmen are normally distributed with a mean of 150 lbs. and a standard…

A:

Q: Male and female populations of to under 80 years old are represented by age in the table below.…

A: The question is about frequency distribution.Given :

Q: How I can calculate the standard deviations of each of the two differentassets?

A: Standard deviation is the positive square root of the mean of the squares of the deviations of the…

Q: Scores on an IQ test are normally distributed with a mean of 50 and a standard deviation of 20.…

A: Given: Mean = 50 Standard deviation (σ) = 20

Q: The annual per capita consumption of oranges (in pounds) in the United States  can be approximated…

A: It is given that the mean and standard deviation are 19.2 and 4, respectively.

Q: The scores on a standardized test are normally distributed with a mean of 100 and standard deviation…

A: