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Q. Example of Selection a Sample?
Ans.
Suppose a presidential election is approaching and many people are interested in knowing which candidate is most likely to win the vote. You have been assigned the task of predicting the future president one month before Election Day. How do you do it?
Solution: Here is one way that you might approach this problem. Use the 4 steps listed above.
1) The objective of this survey is to determine what percent of voters are likely to vote for the republican candidate, the democratic candidate or another candidate.
2) The variable is the way each member of the population chooses to vote. The population is all of the registered American voters.
3) You may decide to randomly dial phone numbers using U.S. area codes until you find 1000 registered voters. Ask them which candidate they plan to vote for.
4) If the sample you have chosen is a good representation of the voting American public, then you might assume that the percentage of voters in your sample who chose to vote republican will be the same percentage of voters in the entire population who will vote republican. You can assume the same for the democratic candidate as well as the other candidates.
After analyzing the data the researcher has to test ten hypotheses various tests such as chi square test t test have been developed by statisticians for the purpose. The hypotheses
methods of transfer princing
Assumed Means Deviations in F2 Test : When actual means of X and Y variables are in fractions the calculations can be simplified by taking the deviations from assumed means. When d
The researcher and the respondents do not come in contact with each other if this method of survey is adopted Questionnaires are mailed to the respondents with a request to re
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Use inductive reason to find a pattern for the answers. 9x9=81 99x99=9801 999x999=998001 9999x9999=99980001 99999x99999=?
A researcher working for a drug company is interested in investigating the effect of storage on the potency of one of the company's drugs. 10 freshly produced bottles of the drug a
Choose one of the following four problems depending on your area and interest. a. What explains why a particular political candidate wins and his/her opponent loses a tightly co
Is the z-square the same as the z-test? what is it used for and how is it different from t-square?
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