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Suppose that, on average, electricians earn approximately dollars per year in the United States. Assume that the distribution for electrician's yearly earnings is normally distributed and that the standard deviation is dollars.
What is the probability that the average salary of four randomly selected electricians is less than $50,000?
Assume you have completed three months of the project FG. The Budget at Completion (BAC) was 200,000 for this six-month project.
The parts supplier wishes to set up a hypothesis test so that the problem-solving team will be assigned when the null hypothesis is rejected. Set up the null and alternative hypotheses for this situation.
1) A coin is flipped 14 times. Use the normal approximation to the binomial distribution to calculate the probability of a total of 4,5, or 6 heads. Compare this to the binomial probability.
A bag contains 12 white and 18 black balls. Two balls are drawn in succession without replacement.What is the probability that first is white and second is black?
Political polls typically sample randomly from the U.S population to investigate the percentage of voters who favor some candidate or issue. The number of people polled is usually on the order of 1000. Suppose that one such poll asks voters how they ..
The following is the activity and associated costs for the renovation of the local high school football stadium. The times are in weeks. What is the critical path and total time required for this project
Compute descriptive statistics to create a customer profile for each CardioGood Fitness treadmill product line.
What does it mean to set alpha at .05?What is your null hypothesis? Alternate hypothesis?Is this a one-tailed or two-tailed hypothesis?Calculate the obtained z. Do you reject or fail to reject the null hypothesis?
A product is made up of two subsystems in parallel. Subsystem one consists of ten elements in series with a failure rate if 1/100. The second subsystem consists of 5 elements in series with a failure rate of 1/200. What is the overall reliabili..
If we select 7 colleges from a major and then record whether they are of 'School Type' 'Private' or not, is this experiment a binomial one? Why or why not?
The table below contains estimates from a linear regression predicting respondents' views on an abortion views scale going from 0 to 10 where higher values indicate more pro-choice views and lower values indicate more pro-life views with the indep..
A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will be between 85 and 125 points?
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