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An investment project is expected to earn $100,000 on average with a standard deviation of $50,000. Assume the earnings from this investment project is a normal distribution. What is the probability that you will lose money or earn nothing from this project.
Approximately 14 percent of the population of Arizona is 65 years or older. A random sample of five persons from this population is taken. The probability that less than 2 of the 5 are 65 years or older is:
Test the proportions of yellow fire trucks have a significantly lower accident rate.
Is the estimate from the participants significantly higher than the actual number (µ = 3.1)? Use a one-tailed test with = .05.
Jim owns three real estate offices in Anytown. He has decided to open one more office, but cannot decide between hometown or uptown as the towns where he wants to locate.
The first unit required 9800 hours to manufacture. The company expects to experience an 82% unit learning curve. Estimate the cost of the 20th unit. (Round intermediate calculations to 4 decimal places)
What is the probability that the mean starting salary is between $31,000 and $33,000 - Graduates from a graphic arts course at a community college have a mean starting salary
Give an example of a repeated measures analysis of variance (ANOVA)--no examples of therapy or temperature.
Suppose that 1% of all people have a particular disease. A test for the disease is 99% accurate. This means that a person who test positive for the disease has a 99% chance of actually having the disease
Test the claim of the brewery about the mean volume equal to 32 oz. at the 0.05 significance level. It's your choice whether to use z or t.
The DPMO for process is 860. Find the approximate Six Sigma level of the process?
Find the sample proportions and test statistic for equal proportions. Is the decision close? Find the p-value.
Survey on What do you think is the biggest problem facing education today. One problem with exit polls may be that the wrong "key precincts" were chosen.
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