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Once down to about 15, the world's only wild flock of whooping cranes now numbers a record 237 birds in its Texas Coastal Bend wintering ground (www.SunHerald.com). The average whooping crane egg weighs 208 grams, with a standard deviation of 1.7 grams. Assuming the distribution of weights is normally distributed, 4% of whooping crane eggs weigh less than how many grams?
Five children under twelve are selected at random. The probability that the average number of hours that they spend each week watching television is at least 30 is about?
Five homes were recently sold in Oxnard Acres. Four of the homes sold for $400,000 while the fifth home sold for $2.5 million. Which measure of central tendency best represents a typical home price in Oxnard Acres?
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Assume that each of the following studies cannot be analyzed using a parametric procedure. For each of the following studies (below), indicate the appropriate nonparametric procedure, and explain why you chose it.
(a) Compute the arithmetic mean of the subscribers' incomes. (b) Compute the modal and median incomes.
Recognize strategies that were utilized to control for nuisance variables and minimize threats to valid inference making.
To test whether the significant difference between two sample variance using F-tests.
Population of consumers where 30% of them favored a new product and 70% of them disliked it. If 20 persons are sampled, what are the probabilities of finding: Binomial
What would you suggest to be the appropriate statistic tests to use and why ? Any suggestions on stating the hypothesis in a more professional manner?
In a non instanteneous receipt model, daily demand is 55 units and daily production is 120 units, Co=$70 and Cc=$4 per unit per year. What is the maximum inventory level?
Of 1338 people who came into a blood bank to give blood, 253 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.
What is the best predicted IQ of the wife, given that the husband has an IQ of 105 ? Use a significance level of 0.05.
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