BUQU 1230
Sunday, November 11, 2012
Chapter 6, Q18
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A stock exchange has a mean stock price of $20 with standard deviation of $8.20. Q. What is the probability a company will have a stock p...
Tuesday, October 23, 2012
Chapter 5 Q32 Military Detection
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Chapter 5 Q 32 Probability of one system detecting an attack is 0.9. a. Probability of one system detecting an attack? 0.9 of cour...
Saturday, October 13, 2012
Testing for independence: probability
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Q. If P(A) = 0.5, P(B) = 0.6 and P(A∩B)=0.3, test whether A and B are independent. A. The test for independence is: if P(A|B) = P(A) t...
Saturday, March 17, 2012
Chapter 6 Q34
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Chapter 6, Q 34 page 279. There is a Youtube here that might help Question : Family annual expenditure on food and drink( normally distr...
Friday, November 18, 2011
Chapter 7 Q22
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Q. The annual cost of automobile insurance is $939. Assume that the population standard deviation is $245. Find the probability that a SRS o...
Wednesday, November 16, 2011
Chapter 6 Q20
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An alert student has noticed a mistake in the textbook answers. Here I've worked through Q20 from Chapter 6. a. a. We want t...
Tuesday, November 15, 2011
Q4 p333
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Q4 p333 Q: A 95% confidence interval for a population mean was reported to be 152 to 160. If σ = 15, what sample size was used in this stud...
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