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The mean selling price (in $ thousands) of the homes was computed earlier to be $221.10, with a standard deviation of $47.11. Use the normal distribution to estimate the percent of homes selling for
A dish contains 30 white jelly beans and 30 red jelly beans. You select two of jelly beans from the dish and eat them (one at a time). a) What is the probability that you select exactly two white je
Assume that a particular detection system has a 0.90 probability of detecting a missile attack. Answer the following questions using the binomial probability distribution. What is the probability th
If the company places monthly orders equal to the expected value of the monthly demand, what should Carolina's monthly order quantity be for this product?
A pharmaceutical company conducted a study to evaluate the effect of an allergy relief medicine; 250 patients with symptoms that included itchy eyes and a skin rash received the new drug. The result
You want to buy a microwave oven and will choose Model A if its repair costs are lower than Model B's. For 47 Model A ovens, the mean repair cost was $92 and the standard deviation was $15.50. For 5
The data below was obtained for the years 1993 through 1998 and indicate the number of fireworks (in millions) used and the related injuries. Predict the number of injuries (provided there is a sign
A random sample of 50 households revealed a mean of $112,000 and a standard deviation of $40,000. What is the standard error of the mean?
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.9 years, and standard deviation of 0.7 years.
Quality control accepts a bottle that is filled to within .02 ounces of the number of ounces shown on the container label. What is the probability that a bottle of this liquid detergent will fail t
The data is shown below for 8 randomly selected participants. Is there sufficient evidence to conclude that a significant amount of improvement took place? Assume pulse rates are normally distribute
Using historical records, the personnel manager of a plant has determined the probability distribution of X, the number of employees absent per day. Calculate the standard deviation of the populatio
342 of 562 randomly selected U.S. adults interviewed said they would not be bothered if the National Security Agency collected records of personal telephone calls they had made. Is there sufficient
A manager wishes to find out whether there is a relationship between the number of radio ads aired per week and the amount of sales (in thousands of dollars) of a product. The data for the sample ar
Can you please show the work so I see how this process is done, without a calculator and in sequential steps. It helps me understand. If r = 0.15, find the coefficients of determination and nondeter
From the fourth quarter of 1997 to the first quarter of 1998, revenues declined. What happened on a seasonally adjusted basis? Compute the forecast for the second quarter of 2002.
How closely related is the new client base to sales performance? Draw the scatterplot and compute the correlation and describe the relationship
If you assume that last names should not have an impact on starting salary of graduates of BACC, then what is the appropriate null hypothesis?
Calculate the two sided 90% confidence interval for the population mean of waiting times.
A tire manufacturer advertises that "the average life of our new all-season radial tire is 50,000 miles. An immediate adjustment will be made on any tire that does not last 50,000 miles." You purc
What is the estimated index of satisfaction for a person who first married at 18, has an annual income of $26,500, has three children living, has assets of $156,000, has an index of health status of
A market research is available for $10,000. Using a decison tree analysis, it is found that the expecyed monetary value with no survey is $62,000. If the expected value of sample information is -$7,
If ABC adds a new plant addition and XYZ does not produce a competitive product, they expect a profit of $600,000; if XYZ does compete for this market, ABC expects a loss of $100,000.a. determine t
Find the least-squares equation to predict sales from number of clients. Can the least squares equation be used to predict sales?
He collects information from 82 walk-in customers and calculates that their average waiting times that is 21 minutes with a standard deviation of 4 minutes. a)Determine the degrees of freedom to be