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Stratified Sampling: If the population from which a sample is to be drawn does not constitute a homogenous group, then stratified sampling technique is applied so as to obtain a representative sample. In this techniques the population is stratified into a number of non overlapping subpopulations or strata and sample items are selected from each stratum. If the items selected from each stratum is based on simple random sampling the entire procedure first stratification and the simple random sampling is known as stratified random sampling.
Twenty years ago, entering male high school students of Central High could do an average of 24 pushups in 60 seconds. To see whether this remains true today, a random sample of 36
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Bonded warehouse is a storage area under Customs authority that is imported dutiable goods on which duty is unpaid and these are stored. Once the duty & other charges are paid the
Questions 1. A genetic experiment with peapods resulted in one sample of offspring that consisted of 443 green peapods and 170 yellow peapods. Construct a 95% confidence inter
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Mention the characteristics of Statistics. Explain any two applications of Statistics
Discuss the role that racism played in public policies related to urban housing throughout the twentieth century. Did this racism manifest itself solely on an individual level (i.e
Someone tries to increase the magnetic field inside a coil by adding more turns to the coil. Where should he add more turns: to the end of the coil (i.e., to make it longer) or to
Oprah Winfrey endorsed Barack Obama in the Democratic presidential primary. Does Oprah's endorsement make a difference? If so, we would expect support for Obama to be higher among
After successfully having navigated the LPP issue, HCFP has once again for your help. Now, they are considering implementing a new drainage system to improve water flow across the
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