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For the following, describe the target population, sampling frame, sampling unit and observation unit. Is there any selection bias or inaccuracy of responses?
The article "What readers say about Marijuana" (Parade, July 31, 1994, p.6) reported "More than 75% of the readers who took part in an informal PARADE telephone poll say marijuana should be as legal as alcoholic beverages. "The telephone poll was announced on page 5 of the June 12th issue; readers were instructed to "Call 1-900-773-1200, at 75 cents a call, if you would like to answer the following questions. To participate, call between 8 am EDT on Saturday, June 11th and midnight EDT on Wednesday June 15th.
Using ANOVA, determine if there is a significant difference in the six year graduation rate by type.
Perform all pairwise comparisons among the three programs, using a Tukey adjustment and an overall significance level of 0.05, then interpret all your results.
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
What is the relationship between descriptive statistics and Affirmative Action ? Can using probability in market trending decisions lead to a bad decision? Explain?
Construct a sample space using a tree diagram - Which of the following three sets of probabilities are inappropriate because they violate a basic rule of probability
Calculate the value of chi-square. What is your decision regarding H 0 ?
A bowl with 10 marbles: 2 red marbles, 3 green marbles, and 5 blue marbles. We randomly select 4 marbles from the bowl, WITH REPLACEMENT, that is once a marble is selected, its color is noted and the marble is put back in the bowl (notice this doe..
If the top 15% of the test scores are usually good enough for admission to law school, find the cut off score for gaining admission.
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
In addition, record the values for the UCL, center line, and LCL. Also, record any points that are out of control. Use a z-value of three.
Utilizing a binominal experiment, that is each trail can be reduced to two outcomes, construct a binomial distribution.
Explain the meaning of the conditional mean of the dependent variable in the population regression function. Illustrate using an example.
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