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A recent article in a university newspaper claimed that the proportion of students who commute more than 15 miles to school is no more than 25%. Suppose we want to test the hypothesis. State hypothesis Ho and the alternative hypothesis H1 that we would use for this test.
Now they need your help to determine if the mean number of news shows watched in your neighborhood is similar to the national mean.
Compare and contrast how the psychologist as a detective (a researcher) solves a problem to how a non-researcher solves a problem.
Locate the results of a recent survey in a newspaper, magazine, or Internet article. Outline the survey data so that your peers can understand the variables and results, and then identify at least one key formula from this Module that you could us..
Determine the probability that sample mean will be greater than M=510. In symbols, what is p(M>510)? Determine the probability that sample mean will be greater than M=520.
A statistics professor plans classes so carefully that the lenghts of her classes are uniformly distributed between 50.0 and 52.0 minutes. find the probability that a given class period runs less than 50.75 minutes.
Probability of selecting a graduating college who had given blood that percent of the time. What is the mean number of times a person gave blood based on this poll?
State the hypotheses for a chi-squared test in the context of this problem. Calculate the expected matrix and describe what it represents. Calculate the test statistic. Describe what this represents and answer the question posed.
Assume that both samples are independant simple random samples from populations having normal distributions.
Which of the following(s) can be considered (a) variable(s)?
Find the probability that exactly six tickets are written on a randomly selected day from this distribution.
Which study has the higher probability of a Type II error, the 60-subject study or the 100 -subject study? Which study has higher power?
Post-hoc fallacy is that condition where regression shows a high degree of correlation (R square is high), but there is no real cause-effect relationship between the independent and dependent variables.
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