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The relative frequency distribution of the number of TVs sold in a day in a department store in the last year is as follows:
Number of TV sold 1 2 3 4 5Relative Frequency 0.15 0.2 0.5 0.1 0.05
Compute the mean and standard deviation of this distribution.
Using your knowledge of infectious disease epidemiology, quantify the pattern of disease X in this group, i.e., what are the infectivity, pathogenicity, and virulence of disease X?
A random sample of five observations from the first sample resulted in a standard deviation of (12). A random sample of seven observations from the second sample gave a standard deviation of (7) at the (.01) significance level.
You're given that the forecast for the current period of 70 turned out to be 6 units less than the actual demand. The forecast for the next period is 75.8.
Use Bayes's rule to find the conditional probability that Julianne is a carrier, given that she and Jason have one child who does not have cystic fibrosis.
The accounting department at Weston Materials, Inc., national manufacturer of unattached garages, reports that it takes two construction workers mean of 32 hours and standard deviation of 2 hours to erect the Red Barn model.
A counseling psychologist is interested in determining whether the perception of a counselor's expertise is affected by the approach the counselor utilizes.
Four customers in succession come into the store to order stereos. The retailer is interested in their preferences. List the possibilities for preference arrangements among the four customers.
Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Fully explain your answer.
Critically discuss the general characteristics of a research study for which an independent-measures t would be the appropriate test statistics
The mean number of cargo ships that arrive at a port is 3 per day. The port has staff and facilities to handle up to 6 ships in a day. Using the Poisson distribution, find the probability that, on a given day,
Do these data provide sufficient evidence to reject the claim made by Creative Good? Two sample F-test for the ratio of population variances
There are four auto body shops in a community and all claim to promptly serve customers. To check if there is any difference in service customers are randomly selected from each repair shop and their waiting times in days are recorded.
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