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A normal distribution has a mean of 25 and a standard deviation of 3. Find the value above which there is a .70 probability that an observation will occur?
a new computer virus attacks a folder consisting of 200 files. each file gets damaged with probability 0.2
What is a discrete and continuous random variable? What is an example of each variable? What are the similarities and differences between each variable?
what is an independent sample? what is a related sample? when must researchers use different hypothesis tests for
Mama's Stuffin' is a popular food item during the fall and winter months, but it is marginal in the spring and summer. Use the following demand forecasts and costs to determine which of the following production planning strategies is best for M..
Ppurpose of determining the roommates. If the pairing is done at random, what is the probability that there are no offensive-defensive roommate pairs?
Suppose that the mean systolic blood pressure of normal adults is 120 millimeters of mercury (mm Hg) and the standard deviation is 5.6. Assume the variable is normally distributed.
Expand and aggregate plan using each of the following guidelines and complete the total cost for each plan. Which plan has the lowest total cost.
In a poll of 500 randomly selected voters, 260 of them support the strategist's candidate. At = .05, is the political strategist's claim warranted?
Suppose that four American adults are asked if they ate at table-service restaurants last week. What is the probability that all of them say yes?
How much difference does the choice of model make? Which forecasts do you trust the most, and why? (f) If you have access to Ward's Automotive Yearbook, check your forecasts.
question of employees in entertainment industry 0.4 work part itme and 0.49 earn more than 20540 annually. if 0.36 of
The weekly salaries one year after graduation are normally distributed with a standard deviation of $85. If one graduate is randomly selected. Describe the distribution of the weekly salaries being earned one year after graduation.
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