2 - If the random variable X from a distribution with mean 70 and variance 9 find the mean and variance of: y= -2X + 5 and z= (X-70)/3. ViewFoxit Reader PDFV Tell me what you want to do...A A Aa三、三,年, M 1Tnes New Ro 14AaBbCcD AaBbCcDc AaBbC AABBCCC AaB AABBCCC AaBb.I U- abe x, xA,ッ、A前。1 NormalI No Spac... Heading 1Heading 2TitleSubtitleSubtleFontParagraphStyles1. If the random variable X from a distribution with mean 50 and variance 10andy = 0.8x + 15. Find the mean and variance of y.2 - If the random variable X from a distribution with mean 70 and variance 9find the mean and variance of : y = -2X+ 5 and z= (X-70)/3.Activate WindowsGo to Serungs to activate圖民ishへ参

Given :- EX = 70VarX = 9And , Y =-2X+5and , Z=X-703 we have to find EY , VarY and EZ , VarZ…

Answered: - If the random variable X from a…

Algebra: Structure And Method, Book 1

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ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter4: Polynomials

Section4.8: Rate-time-distance Problems

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2 - If the random variable X from a distribution with mean 70 and variance 9 find the mean and variance of: y= -2X + 5 and z= (X-70)/3.

View
Foxit Reader PDF
V Tell me what you want to do...
A A Aa
三、三,年, M 1T
nes New Ro 14
AaBbCcD AaBbCcDc AaBbC AABBCCC AaB AABBCCC AaBb.
I U
- abe x, x
A,ッ、A
前。
1 Normal
I No Spac... Heading 1
Heading 2
Title
Subtitle
Subtle
Font
Paragraph
Styles
1. If the random variable X from a distribution with mean 50 and variance 10
and
y = 0.8x + 15. Find the mean and variance of y.
2 - If the random variable X from a distribution with mean 70 and variance 9
find the mean and variance of : y = -2X+ 5 and z= (X-70)/3.
Activate Windows
Go to Serungs to activate
圖民
ish
へ参

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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