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 Introductory statistics
 Continuous random variables
 The exponential distribution

Card 24 / 25:
memoryless property
For an exponential random variable X , the memoryless property is the statement that knowledge of what has occurred in the past has no effect on future probabilities. This means that the probability that X exceeds x + k , given that it has exceeded x , is the same as the probability that X would exceed k if we had no knowledge about it. In symbols we say that P ( X > x + k  X > x ) = P ( X > k ).

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Questions & Answers
change of origin and scale
3. If the grades of 40000 students in a course at the Hashemite University are distributed according to N(60,400) Then the number of students with grades less than 75 =*
If a constant value is added to every observation of data, then arithmetic mean is obtained by
data can be defined as numbers in context. suppose you are given the following set of numbers
18,22,22,20,19,21
what is statistics
Natasha
statistics is a combination of collect data summraize data analyiz data and interprete data
Ali
It is the science of analysing numerical data in large quantities, especially for the purpose of inferring proportions in a whole from those in a representative sample.
Bernice
statistics was first used by?
Terseer
if a population has a prevalence of Hypertension 5%, what is the probability of 4 people having hypertension from 8 randomly selected individuals?
Carpet land sales persons average 8000 per weekend sales Steve qantas the firm's vice president proposes a compensation plan with new selling incentives Steve hopes that the results of a trial selling period will enable him to conclude that the compensation plan increases the average sales per sales
Supposed we have Standard deviation 1.56, mean 6.36, sample size 25 and Zscore 1.96 at 95% confidence level, what is the confidence interval?
if Y=a+bX and X=c+dY the show that r= √hd where r is regression coefficient
this is a linear function. I presume this will be solved simultaneously?
how can I get esyer statistic?
i am bba students at nfc
Hamdan
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Hamdan
which uni u completed msc?
Hamdan
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i am so glad this type of people lived in pakistan💔
Hamdan
but unfortunately bba students just live for money🤣
Hamdan
no purpose of life without money🤠
Hamdan
sampling estimation hypothesis about question
Hamdan
ok ye tu easy topic h bhot
main tume is se related ques aur theory bejti ho
in an examination 60% passed in physics 52% passed in statistics. while 32% failed in both the subject's using relations between class frequencies in attributes find the percentage of student passed in both the subject's
Satish
general rule of addition
Hamdan
Find the multiple regression line Y on X1 and X2 from the following data, also interpret the estimated
parameters and calculate standard error of estimate.
Y 90 72 54 42 30 12 10
X1
how old are the children needed
Source:
OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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