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A company has two production lines for constructing television sets. Over a certain period of time, 23 out of 1128 television sets from production line A are found not to meet the company's quality
Assuming equal variances, is there evidence that the new route is quicker than the standard route? Calculate the P-value for this test.
Test the hypothesis that the variance of the delivery time for the standard route equals that of the new route.
Construct a 99% two sided confidence interval for the average weight of the paper.
Seventy percent of married couples paid for their honeymoon themselves. You randomly select 20 married couples and ask them if they paid for their honeymoon themselves is more than one.
Because not all airline passengers show up for their reserved seat,an airline sells 130 tickets for a flight that holds 120 passengers. The probability that a passenger does not show up is 0.10, an
For a population with µ= 40 and s = 7, find the z-score for each of the following X values. (Note: You probably will need to use a formula and a calculator to find these values.)
What is the probability that every passenger who shows up cantake the flight? What is the probability that the flight departs with emptyseats?
Seventy percent of married couples paid for their honeymoon themselves. You randomly select 20 married couples and ask them if they paid for their honeymoon themselves. Find the probability that the
A spymaster has a network of 11 operatives whom he pays out of a slush fund containing $24000. For accounting reasons, his service requires him to use up his entire fund and to pay his operatives i
1) In the State of OH, 40 percent of all e-mails deal in some way with the depressed U.S. economy. If a random sample of 10 e-mails is selected, what is the probability of the following:
Suppose that the company above is expected to finish the above project in 7 months. The company is to receive 10,000 dollars for each month they finish earlier, but will have to pay 25,000 dollars f
A distribution with a mean of µ = 62 and a standard deviation of s= 8 is transformed into a standardized distribution with µ= 100 and s= 20. Find the new, standardized score for each of
Anonymous asked A company is in charge of a construction project. Based on records of similar projects , the distribution of months x needed to complete the project is given by :
Her other alternatives, a growth stock and a mutual fund, are risky. Their rates of return fluctuate from year to year; there are no guarantees. Historical performances of these alternatives are pre
A. Further the rate of defectives is 1% for B and 2% for A. The daily output of the machines is combined and then a random sample of size 12 taken. Find the probability that the sample contains 2 de
Using the Census data above, if one family residing in Smallville, OH is selected at random by the OH Registry, what is the probability of the following:
Suppose X has chi-squared distribution with 2 df. Find E(X^55) exactly. [I used the fact that chi-squared with 2 df is the same as Exp(1/2) to get me started.. unsure of how to find a moment list)
Test the hypothesis that the variance of the delivery time for the standard route equals that of the new route. Assuming equal variances, is there evidence that the new route is quicker than the stan
The bus you take every morning always arrives anywhere from 2 minutes early to 15 minutes late and it is equally likely that it arrives during any of those minutes. Suppose that you arrive at the bu
If the sizes of five independently selected droplets are measured, what is the probability that at least one exceeds 1500 µm?
Amy commutes to work by two different routes A and B. If She comes home by route A then she will be home no later then 6 P.M. with probability of .8 but if she comes comes home by route B, then she
A state runs a lottery in which six numbers are randomly selected from 40, without replacement. A player chooses six numbers before the state's sample is selected. What is the probability that the s
Find the sample proportion and a 95% confidence interval for the proportion of people who would prefer a doctor, nurse, or other health care professional as a marriage partner. Convert the estimate