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A market-research firm has discovered that 30% of the people who earn between $25,000 and $50,000 per year have bought a new car within the past two years. Answer the following questions about a sample of 12 people with annual income between $25,000 and $50,000
1. What is the mean of this distribution?
The answer is 3.6...but how do you get that answer? Is there a short-cut way of getting the answer on my TI-83 Plus calculator?
2. What is the probability of encountering 0 or 1 person who bought a new car?
The answer is 0.085...but how do you get that answer? Is there a short-cut way of getting the answer on my TI-83 Plus calculator?
Consider a machine that fills soda bottles. The process has a mean of 15.9 ounces and a standard deviation of 0.06 ounces. The specification limits are set between 15.8 and 16.2 ounces. a) Compute and interpret the machine's Cp
If PV is a tree before observing the evidence, then we would like PV PV |A= a to be also represented as a tree. Is this always possible?
For the new study, the estimate should be within 1% of the population proportion with a 90 percent confidence level. What is the necessary sample size?
define population and sampling unit for selecting a random sample in each of the following cases. a hundred voters from
The Charm City Fan Company manufactures two products: large fans and medium fans. Each large fan requires 3 hours of wiring and 2 hours of drilling. Each medium fan requires 2 hours of wiring and 1 hour of drilling. There are 480 hours of wiri..
What is your opinion: Does this study provide evidence that the postmortem serotonin levels are different between patients who die of heart disease and patients who die of other causes?
Suppose it is known that if you offer free samples o a product, at least 52% of adults are more likely to buy the product. You interview a random sample of 50 adults.
Test the hypothesis. Will you reject or not reject the null hypothesis at α = 0.05
You wish to evaluate the proportion of customers who are satisfied with their supermarket at level of confidence of .92 and in .025 of true value. How large of sample is required?
you and your opponent both roll a fair die. if you both roll the same number the game is repeated otherwise whoever
It is known that 60 percent of all registered voters in the 42nd congressional District are Republicans. There registered voters are selected at random from the district. Compute the probability that exactly 2 of the 3 selected are Republicans, u..
Explain the concept of "Regression Analysis", its types (3 types at least), applications and usefulness. Provide real application of its usage. Some times, Maximum likelihood estimation is not applicable, Explain and provide an example?
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