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The population of the size of the households of my immediate family members has a Mean =3.6, median=4, range= 5, standard deviation=1.85472, variance=3.439.
Now consider the possible random samples from this population with n=2(you should identify 25 such samples). For each of these samples, compute the mean, median, range, standard deviation and variance (hint: with n=2, the median is the same as the mean).
At this point, you should have produced five data sets (four distinct) with 25 data value each: find the mean (only the mean) of each of these sets.
Compare the mean of the sample statistic from c) with the population parameters computed in a)- which of these are unbiased estimators?
Why is it important that statistical research follow ethical guidelines? What are some potential consequences of not following ethical statistical practice?
Find the PDF of the median of the sequence. - Find the expected value of the median of the sequence. - Find the variance of the median of the sequence.
What were the reasons for the creation of the European Economic Community? Why did the organization change its name to the European Union?
Using a computer or calculator that provides proportions falling below a specified z-score, determine the approximate proportion for each of the following.
The Dean of your school has asked you to organize and present data from a one-question (one-variable) survey to determine students' satisfaction in the social work program. There are 220 students in the program: 55 of them (25 percent) were random..
find the pearson correlation coefficient for the following set of data using the computational formula from the
question 1. there is a new drug that is used to treat leukemia. the following data represents the remission time in
Deduce that the random variable Y in (a) has the density given in (b).
Suppose 7% of construction workers have been exposed to asbestos. We randomly sample 4 construction workers (assume they are independent). Use the Binomial probability function, with n = 4 and p = .07, to find the probability that: Find the probabi..
(a) Find a 99% confidence interval for the average number of fat grams consumed per day by US adults.
Suppose you want to determine the mean number of students per statistics class in your state. Describe a possible sampling method in three to five complete.
Are there any statistically significant differences in baseline characteristics between treatment groups? Justify your answer. Write the hypotheses and the test statistic used to compare ages between groups. (No calculations - just H 0 , H 1 and for..
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