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A sample of 12 homes sold last week in S1. Paul, Minnesota, is selected. Can we conclude that, as the size of the home (reported below in thousands of square feet) increases, the selling price (reported in $ thousands) also increases?
Assume that the random sample of 200 light bulbs has mean life of 635 hours and standard deviation of 48 hours. Before applying Empirical Rule, what suppositions requires to be made about distribution of lifetimes of light bulbs?
There must be at least two 103.1 Radio ads. Formulate the LP model to determine the number of ads in each outlet and maximize the effective audience contact.
Make a depreciation schedule. A $1,200 postage printing system depreciated using the straight-line method over 4 years.
The Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05..
Suppose the distribution of amounts purchased follows normal distribution. For sample of 50 customers, reply the following questions. Determine the probability the sample mean is at least $25.00?
Determine the probability in big class that both sections are covered? Only one section? Neither section? Determine the expected number of sections covered?
Research question: Are the mean annual attendance rates the same for employees in these three departments?
Construct a 99% confidence interval for the proportion of customers favoring underground installation.
Drug manufacturer knows that for a certain antibiotics, the average number of doses ordered for a patient is 20. Steve Simmons, a salesman for the company
What would be a good example of a null and alternative hypotheses for a decision relevant in life? What Type I and Type II errors could occur with your decision-making process?
LINEAR PROGRAMMING MODELS
A random sample of 2000 students showed that 860 were in favour of more movies on campus. Calculate the sample proportion for this result? Give your answer as a decimal fraction to 2 decimal places.
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