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Is the sample a part of the population or the population apart of the sample? Why would researchers just not use the entire population to be more accurate? Can you give an example of a sample from a given population?
What do you need to be mindful of regarding your sample that will affect your results? What is a random sample? What are methods and types of random samples? When might you not want to use a random sample? Is it possible to generalize your findings with out a random sample? Does the composition of your sample determine if it is random? If not, how is this determined?
What is the difference between the population and the target population?
What things can limit a survey researcher's ability to draw valid inference from the sample to the population?
What other factors should you consider when defining your population and your sample?
If your sample is freshmen in college that voluntarily participated in a psychology research study, what population can you generalize to with your research findings?
At the .05 significance level, is there a difference in the mean number of calls per day between the two employees?
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
The travel time for a college student traveling between her home and her college is uniformly distributed between 40 and 90 minutes.
State one referenced hypothesis including the three variables (FA as an IV, age as the covariate and RS as the DV)
Findout the probability using normal approximation for the provided values. Findout the specified probability from a table of Normal probabilities.
What would you predict the price per share to be if 95 million shares were offered?
A pharmaceutical company has determined that if a new cholesterol-reducing drug is manufactured (introduced to the market) the following probability distribution will describe this drug's contribution to the company profits during the next six mon..
A researcher is interested in estimating noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is required to get the desired information..
Multiple comparison procedures are going to be done using the Bonferroni method with = 0.05. The value of t** is 2.4667. Which of the following is the appropriate conclusion from carrying out these multiple comparisons?
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
A random variable X that has pmf given by p(x) = 1/ (n+1) over the range Rx = {0,1,2,...,n} is said to have a discrete uniform distribution. Find the mean and variance of this distribution.
2 laptops are chosen at random without replacement, what is the probability that both are high priced?
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