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Unformatted text preview: Workshop 4 Individual Review Questions Answ er Points 6.50 exponential 0.5 norm al 0.5 2 Insert a histogram for the waiting times here. Insert a normal probability plot for the waiting times here. 2 Insert a histogram for the seating times here. Insert a normal probability plot for the seating times here. 6.51 a. W hat is the probability that a stock in the S & P 500 gained value in 2008? 0.5 b.W hat is the probability that a stock in the S & P 500 gained 10% or more? 0.5 c.W hat is the probability that a stock in the S & P lost 50% or more in 2008? 0.5 d. W hat is the probability that a stock in the S & P lost 60% or more? 0.5 e. (a.) W hat is the probability that a stock in the N ASDAQ gained value in 2008? 0.5 e (b) .W hat is the probability that a stock in the N ASDAQ gained 10% or more? 0.5 e. (c .) W hat is the probability that a stock in the N ASDAQ lost 50% or more in 2008? 0.5 e. (d.) W hat is the probability that a stock in the N ASDAQ lost 60% or more? 0.5 1 6.52 a. les than 1 second? 1 b. between 0.5 and 1.5 seconds? 1 c. above 0.5 seconds? 1 d. Above how many seconds are 99% of the downloard times? 1 U pper 0.5 Lower 0.5 6.53 a. les than 1 second? 1 b. between 0.5 and 1.5 seconds? 1 c. above 0.5 seconds? 1 d. Above how many seconds are 99% of the downloard times? 1 1 7.20 a.If you select samples of n=2, describe the shape of the sample distribution of Xbar. 1 b.If you select samples of n=100, describe the shape of the sample distribution of Xbar. 1 1.5 1.5 7.21 a.what is the probability that the sample mean is between 7.8 and 8.2 minutes? 1 b.what is the probability that the sample mean is bet ween 7.5 and 8.0 minutes? 1 1 d. Explain the dif erence in the results of (a) and (c). 2 7.22 a.what is the probability that the mean time spent per customer is at least 3 minutes? 1 b.there is an 85% chance that the sample mean is les than how many minutes?...
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This note was uploaded on 02/12/2012 for the course MBA 551 taught by Professor Smith during the Spring '11 term at Indiana Wesleyan.
 Spring '11
 SMITH
 Management

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