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You thoroughly mix together two standard decks of 52 cards (so you have now a big deck of 104 cards). You randomly draw 2 cards from this big deck. What's the probability that the sum of the 2 cards is 7?
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
on average there is one flaw per 1000 feet of pipe. what is the probability that there is exactly one flaw in only
assume that a random sample is used to estimate a population proportion p. find the margin of error e that corresponds
Your friend also takes the test and obtains a score of 161.42 and is told that he is in the 22.8th percentile. What is overall mean and standard deviation of the test scores?
Based on anthropological reports in which the status of women is scored on a 10-point scale, the mean and standard deviation across many cultures are known. A new culture is found in which there is an unusual family arrangement.
Find the probability that a random sample of 4 male Siberian tigers will have a sample mean weight more than 450 lb.
When redesigning the fighter jet ejection seats to better accommodate women, which probability is more relevant: The result from part (a) or the result from part (b)? Why?
Here are the shopping times (in minutes) for a sample of shoppers at a particular shoe store: 25, 38, 34, 41, 37 and find the standard deviation of this sample of shopping times. Round your answer to at least two decimal places.
A typical problem statement is correlation research is _____________
Calculate the profit earned/loss incurred on; a high performance tire that exceeds 40,000 miles, a high performance tire that does not exceed 40,000 miles.
a) Find the marginal density of Y. b) Find E(X) HINT: What is E (X|Y=y) ?
What probability distribution does n1 alone have? Specify the values of the sample size index and parameter for that distribution
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