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At a bottling plant, two machines are used to ll 500 ml bottles of pop. The amount of pop put into each bottle by Machine A is a normal random variable with a mean of 508ml and a standard deviation of 5ml. Similarly, amount of pop put into each bottle by by Machine B is a normal random variable with a mean of 506ml and a standard deviation of 4ml. If Machine A is used to ll 60% of bottles. (a) What percentage of bottles containing less than 499ml comes from Machine B Can anyone explain this to me?
a graduate course has 3 biology students and 4 chemistry students. a sample of 2 students is randomly selected from
before a championship football game the referee is given a special commemorative coin to toss to decide which team will
1.the following is the number of chocolate chips found in each of eight cookies.7 9 1 6 13 10 3 5we wish to estimate
Another lamp has one bulb of the same type. If it burns out , it is replaced with another. Find the probability that both fail within a total of 1000 hours.
Academic degrees and gender. Here are the projected numbers (in thousands) of earned degrees in the United States in the 2010-2011 academic year, classi?ed by level and by the sex of the degree recipient:28
a certain disease is found in one person in 5000. if a person does have the disease the test will show a positive
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings.
the probability that a person living in a certain city owns a dog is estimated to be 0.3. find the probability that
Develop a spreadsheet model to determine the optimal number of magazines to order each day. Use 500 replications and round the demand values generated by the normal random number generator (RNG) to the closest integer value.
Find the mean and standard deviation for the population and population of exam scores
1. Explain why excise taxes are more effective at raising tax revenues when applied to products with price inelastic demand versus ones with price elastic demand. Under what conditions would it be possible for tax revenues to decline with highe..
Determine the range of values containing 50% of the population of x. From a large sampling (N>5000), we find that x has a mean value of 5.2 units and a standard deviation of 1.0 units.
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