what is its distribution, its mean and its variance?

Q: how to calculate the variance?

A: Given  The data is as follows: Overall mean = 4.07 Variance = 0.00130 SD = 0.1140

Q: 下riday Day of the Week no. of unit sol0 mon tue wed 4 Thu Sat dNT 3 Sunday 3.

A: Solution-: Let, X-be the number of unit sold We have following table: Day of the week X Monday…

Q: When data is normally distributed the mean equals the median True False

A: Normal distribution

Q: What is an everyday example of variance within samples?

A: If we need to know the variance within samples, we need to use ANOVA Test.

Q: What do the mean deviation, variance and standard deviation all have in common? How is this common…

A: Mean deviation, standard deviation and variance all measure the spread of the distribution.Mean…

Q: In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the…

A: There are 3 independent samples which are Goliath, Varmint and Weasel. We have to find the variance…

Q: When data is normally distributed the mean equals the mode. True

A: Normal distribution

Q: what is the value of the mean and median if the data is normally distributed

A: We have given that the diagram percentage of Pigs vs weight in lbs.

Q: State the properties of Co- variance;

A:

Q: the variance of a data set is 144 and mean is 72 then coefficient of variance is

A: Given,variance(σ2)=144mean(x¯)=72

Q: What statistical calculation, which results in the same units as the measured data, represents the…

A: Introduction: For a random variable X taking n sample values, the sample variance is given by the…

Q: 6.34 As in Exercises 6.6, 6.10, and 6.20, in a study of the particulate pollution in air samples…

A: Given that, the joint pdf of X and Y is,  f(x,y)= 1  ; 0<=x<=2 ; 0<=y<=1  ; 2y<=x…

Q: Find the mean and variance of

A: Given that fx=ke-2x,x>0 The value of k is calculated below: ∫0∞f(x)dx=1∫0∞ke-2xdx=1ke-2x-20∞=1…

Q: What is the variance and standard deviation of this data

A: Given that We have to find Variance and standard deviation :

Q: Use the probability distribution for the random variable x to answer the question. 1 2 3 4 p(x) 0.12…

A: From the provided information, x 0 1 2 3 4 p(x) 0.12 0.15 0.15 0.46 0.12

Q: Given the data set below, calculate the range, mean, sample variance, and sample standard deviation.…

A: Given thatData values :  25 , 35 , 19 , 38 , 16 , 16 , 8 , 29 , 47Sum of data values = 233Number of…

Q: what test is used to determine whether two population means are different when the variance are…

A: The test that is used to determine if the two population means are different when the population…

Q: The heights (at the shoulders) are: 600mm, 470mm, 170mm, 430mm and 300mm. Find out the Mean, the…

A: Here, x x-x (x-x)2 600 206 42436 470 76 5776 170 -224 50176 430 36 1296 300 -94 8836…

Q: c) Construct a frequency histogram of the data. (Using Excel) d) Describe the shape of the…

A: Data of the home ownership rate in each of the 50 states and Washington is given.

Q: What is formula for the variance of the population?

A:

Q: How to Reconstruct the Variance step by step?

A:

Q: Consider a random variable X, with the following empirical pmf. Value X₁ 1 -1 2 O Probability p(x₁)…

A: The probability mass function of X is given.

Q: Can you find a set of data such the mean, median, and variance are all equal to each other?

A: A normal distribution is a common probability distribution . It has a shape often referred to as a…

Q: What is the mean, variance, and standard variation of this data?

A: Data given 25,21.8,15.4,12.9,9.7,11.9,13.5,6.4,9,6.7,4.8,5,8,5.4,0.5,3.1,2,2.1,0.8

Q: Calculate the Average and the variance

A:

Q: what test is used to determine whether two population means are different when the variance are…

A: Solution :  when the variance are known and sample size is large then we use z test to determine…

Q: The following data show the probabilities for the number of cars sold in a given day at Alex's car…

A:

Q: What percentage the male population is between 72 and 76 inches in height?

A: The height of men in country is normally distributed with mean of 6 feet and variance of 16 inches…

Q: What is the TWO SOURCES OF VARIABILITY?

A: The total variation is portioned as follows: SST=SSTR+SSE

Q: * 2.4.5.6-8-17 11 17 20 24 32 Xị 3 5 9 3 fi 1. 4) 5n 00

A: As per our guidelines we are suppose to answer only one question1)Given data set is…

Q: If the mean of grades in statistics = 65 and the variance : 400 , then the Z score of grade 50 =

A:

Q: 13. Jeremy called eight appliance stores and asked the price of a specific model of microwave oven.…

A:

Q: 4.14 Find the proportion X of individuals who can be expected to respond to a certain mail-order…

A: Given,f(x)=2(x+2)5    ;  0<x<10                ; elsewhere

Q: Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000…

A: Let X be the random variable having probability mass function is,  Defects (x)  0 1 2 3 4 5…