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test of hypothesis on proportionsit follows a similar method to the one for means except that the standard error utilized in this casesp
hypothesis testing procedurewhenever a business complaint comes up here is a recommended procedure for conducting a statistical test the reason of
type i and type ii errorswhen testing hypothesis h0 and deciding to either reject or accept a null hypothesis there are four possible happeningsa
rejection and acceptance regionsall possible values which a test statistic may either suppose consistency along with the null hypothesis as
the alternative hypothesiswhen formulating a null hypothesis we also consider the fact that the belief may be found to be untrue thus we will refuse
the null hypothesisit is the hypothesis being tested the belief of a specific characteristic for illustration us bureau of standards may walk to a
hypothesis testingdefinition of hypothesis testing- a hypothesis is a claim or an opinion about an issue or item hence it has to be tested
1 what is the present value of a security that will pay 15000 in 15 years if securities of equal risk pay 89 annually round your answer to the
estimation of difference among population proportionsassume the two proportions be described by p1 and p2 respectivelythen the difference absolute
estimation of population proportionsthis form of estimation applies at the times while information cannot be described as a mean or as a measure but
a comparison of the wearing out quality of two types of tyres was obtained by road testing samples of 100 tyres were collected the miles traveled
large samplesthese are samples that have a sample size greater than 30that is ngt30a estimation of population meanhere we suppose that if we
confidence intervalthe interval estimate or a confidence interval consists of a range as an upper confidence limit and lower confidence limit whether
statistical estimationthis is the procedure of using statistic to estimate a population parameterthis is divided into point estimation whereas an
a paper mill produces two grades of paper viz x and y because of raw material restrictions it cannot produce more than 400 tons of grade x paper and
multiplicative rule - rules of probabilityit is used when there is a string of independent events for that individual probability is known and it is
statistical inferencethis is the process of drawing conclusions about attributes of a population based upon information contained in a sample or
standard errors of the meanthe series of sample means x1 x2 x3 is normally distributed or nearly so as according to the central limit theorem this
distribution of sample distribution or sampling means a sample of size n is taken from the parent population and mean of the sample is estimated it
additional rule- rules of probabilityadditional rule is used to calculate the probability of two or more mutually exclusive events in such
types of distributionpopulation distributionthis refers to the distribution of the individual values of population this mean it is denoted by
the central limit theorem the theories was introduced by de moivre and according to it if we choose a large number of simple random samples says
judgment samplinghere the interviewer chooses whom to interview believing that their view is more fundamental because they might be directly affected
cluster samplingcluster sampling is where a few geographical regions for illustration a location village or town are selected at random and say every
multistage samplingmultistage sampling is similar to stratified sampling except division is done on geographicallocation basis for illustration a