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This type of sampling is also known as chance sampling or probability where each and every item in the population has an equal change of inclusion in the sample and one of the possible samples in case of finite universe has the same probability of beings selected. In case of infinite population the selection of each item in a random sample is controlled by the same probability and that successive selection are independent of one another.
A politician claims that the mean salary for managers in his state is more than national mean $82,000. The salaries (in dollars) for a random sample of 30 managers in the state ar
In a mathematics examination the average grade was 82 and the standard deviation was 5. all students with grade from 88 to 94 received grade of B. if the grade are approximately no
Problem Construct a consumer price index for the information given by using (i) Aggregate expenditure method, (ii) Family budget method. Commodities
A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is well approximated by a normal distribution with mea
In the 2011 federal election, 30.6% of the electorate voted for the New Democratic Party (NDP). (a) A year later, a national poll of 1836 respondents indicated that 36% support the
difference between positive and negative correlaiton
Amp-amplification law The job of an amplifier is obviously to amplify, but the law it abides by isn’t so simple. Ultimately, the amplifier is comparable to a valve, in the sense
how p(x)=hyper geometric distribution is probability mass function
meanings of statistics by different authors and importance of statistics in the field of Education
what isweight and why is it necerary to calculate its index numbet
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