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Suppose the probability is 0.8 that any given person will believe a tale about the transgressions of a famous actress. What is the probability that
(a) The sixth person to hear this tale is the fourth one to believe it?
(b) The third person to hear this tale is the first one to believe it?
Define or give an example of a hypothetical construct. Explain why operational definitions are needed to define and to measure constructs.
Suppose that a random sample of 200 adults found that 110 thought there is too much violence on television. Is this enough evidence to reject the claim? What do we want to know?
Find out the cheapest way of manufacturing today's batch of NasaMist.
Assume that the underlying population variances are equal. a. Are the two samples paired or independent?
two parts are assembled. the distributions of x1 and x2 are normal with micro1 20 s1 0.3 and micro2 19.6 s2 0.4.
Develop a minimum cost schedule for the part-time employees. (How many start at each hour?). What is the total payroll for the part-time employees?
What should the pass mark be set at if 15% are to fail? If the examiner wishes to grant the top 20% A's, what should be the cut-off mark for an A?
Laura wanted to build a multiple regression model based on advertising expenditures and Coffee Time's price index. Based on the selection of all normal values, she obtained the following:
Lab technicians at a major mdical lab can process an average of 400 blood samples a day with a standard deviation of 50 samples. The processing follows a normal distribution.
Find a 99% confidence interval for mu1-mu2, the difference in population means when it is known in advance that the population variances are 4 and 5 respectively.
With a sample standard deviation of 200 pounds. We know the sample is from a normal distribution. The 95% confidence interval of the true mean is?
The chance of selling any one property is independent of selling another property. Compute the probability of selling at least 4 properties in one week.
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