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Question: Management A frustrated store manager is asked to make four different yes-no decisions that have no relation to each other. Because he is impatient to leave work, he flips a coin for each decision. If the correct decision in each case was yes, what is the probability that
(a) all of his decisions were correct?
(b) none of his decisions was correct?
(c) half of his decisions were correct?
as part of a large ongoing study on the treatment of women with breast cancer the treatment time in months of eight
an opinion poll asks a sample of 500 adults a srs whether they favor giving parents of school-age children vouchers
1. What is the probability that 210 to 235 intravenous drug users in this study will be HIV positive. 2. What is the probability that at most 230 intravenous drug users in this study will be HIV positive
Estimate the mean time to failure of the diodes as well as the failure rate. Find a 95% confidence interval for the mean life.
Also, if the standard deviation of all pumps σ is unknown, is there an easier formula to estimate the sample size to control the width of the confidence interval? Please explain it.
why is the f distribution important? how do you determine if a significant difference exists among the groups in anova?
The moment generating function of normal distributed random variable ,Y, with mean and variance .derive the moment generating function of X=-3Y+4.what is the distribution of X? why?
Use a significance test to compare the percents for the three NCAA divisions. Give details and a short summary of your conclusion
Create an R chart for these data, using subgroups of size 4. Is the process variation under control?
Using WSJ or IBD look up the following stocks: General Electric, General Motors, Microsoft and Intel and answer the following questions for each stock. You may have to refer to several issues of your newspaper for all of the information if the pap..
Conduct the six steps of hypothesis testing to find your answer and use a = .01.
The computer breaks down x times during t hours, it costs 50x2 dollars to fix it. How should the company select t in order to maximize the expected profit?
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