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For statistics we have to do chi-square tests to determine the following: Is there is an association between annual household income (defined only as either "low" or "high") and the frequency of take-away food consumption.
Draw a possibility tree for your situation and answer the question: have you made a good bet (what is the likelihood of being correct?
Determine the number of qualitative independent variables that will be required to represent this information and describe the coding scheme for each.
What are the dichotomous outcomes for the related-samples sign test? Which non parametric tests can be computed using a normal approximation formula to compute?
If an urn is selected at random and a ball is drawn, find the probability it will be red.
a simple random sample of 5 months of sales data provided the following information month 1 2 3 4 5 units sold 94 100
What is a test of a proportion and give an example. What test do you use when one sample is small and the other large?
Toss a fair die with one face for every letter from A to Z repeatedly. Show that any finite word will appear infinitely often with probability 1.
A study looked into the management of various tropical grasses for improved production, measured as dry matter yield in hundreds of pounds per acre over a 54-week study period.
Following is a computer output of an analysis of variance based on randomly chosen rents in four cities. Do you believe that the average rent is equal in the four cities studied? Explain.
Identify any confounding variables. Would this study be considered an observational study or an experiment?
if a manager believes that the required sample size is too large for a situation in which she desires to estimate the
If a random sample of 100 shoppers is taken, what is the probability that at least 30 of them will be found to be holders of the card?
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