An inventory study determines that, on average, demands for a particular item at a warehouse are...
An inventory study determines that, on average, demands for a particular item at a warehouse are made 5 times per day. What is the probability that on a given day this item is requested (a) more than 5 times? (b) not at all?
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An inventory study determines that, on average, demands for a
particular item at a warehouse are...
The Computer Warehouse purchases its inventory from more than a dozen different vendors. Orders are placed...
The Computer Warehouse purchases its inventory from more than a dozen different vendors. Orders are placed via telephone, fax, or on the supplier’s Web site. Most orders are delivered the next day. Most orders are filled completely in one shipment, but sometimes a supplier is out of stock of a particular item. In such situations, the bulk of the order is shipped immediately and the out-of-stock item is shipped separately as soon as it arrives (such shipments of back orders...
A store stocks a particular item. The demand for the product each day is 1 item...
A store stocks a particular item. The demand for the product each day is 1 item with probability 1/6th, 2 items with probability 3/6th, and 3 items with probability 2/6th. Assume that the daily demands are independent and identically distributed. Each evening if the remaining stock is less than 3 items, the store orders enough to bring the total stock up to 6 items. These items reach the store before the beginning of the following day. Assume that any demand...
A college professor determines that students who study an average of 4.34 ± 2.21 (M ±...
A college professor determines that students who study an average of 4.34 ± 2.21 (M ± SD) hours per day do generally better on exams. Assuming these data are normally distributed, what is the z-score for students who study 6 hours per day? A. 0.48 B. 0.55 C. 0.63 D. 0.75
Researchers found that a person in a particular country spent an average of 5.1 hours a...
Researchers found that a person in a particular country spent an average of 5.1 hours a day watching TV in 2010. Assume the population standard deviation is 1.9 hours per day. A sample of 43 people averaged 5.9 hours of television viewing per day. Does this result support the findings of the study? Zx= ___ (round 2 decimal places) p(x > 5.9) = (round 2 decimal places) Does this result support the studies findings? The probability is ____ than .05,...
The amount of insurance (in thousands of dollars) sold in a day by a particular agent...
The amount of insurance (in thousands of dollars) sold in a day by a particular agent is uniformly distributed over the interval [15, 65). A. What amount of insurance does the agent sell on an average day? B. Find the probability that the agent sells more than $55,000 of insurance on a particular day. A. The agent sells $ of insurance on an average day. B. The probability that the agent sells more than $55,000 of insurance on a particular...
A study reports that teenagers drink an average of 22 ounces of soda per day with...
A study reports that teenagers drink an average of 22 ounces of soda per day with a standard deviation of 6 ounces. Assume that the distribution of the number of ounces of soda consumed by teenagers per day follows a normal distribution. a. What is the probability that a randomly selected teenager consumes less than 12 ounces of soda per day? b. What is the probability that a randomly selected teenager consumes more than 30 ounces of soda per day?...
The amount of insurance (in thousands of dollars) sold in a day by a particular agent...
The amount of insurance (in thousands of dollars) sold in a day by a particular agent is uniformly distributed over the interval [20, 85). A. What amount of insurance does the agent sell on an average day? B. Find the probability that the agent sells more than $55,000 of insurance on a particular day. A. The agent sells $ 52,500 of insurance on an average day. B. The probability that the agent sells more than $55,000 of insurance on a...
Consider the following excerpts from a New York Times article: Despite its early promise … Restoration...
Consider the following excerpts from a New York Times article: Despite its early promise … Restoration has had trouble becoming a mass-market player … What went wrong? High on its own buzz, the company expanded at breakneck speed, more than doubling the number of stores, to 94, in the year and a half after the stock offering … Company managers agree, for example, that Restoration’s original inventory system, which called for all furniture to be kept at stores instead of...
Oasis Corporation has a maintenance department that handles repair of electronic devices. The average rate of...
Oasis Corporation has a maintenance department that handles repair of electronic devices. The average rate of arrival of machines for repair, follow a Poisson distribution and occur at the rate of 3 per day. The maintenance department can handle 4 machines per day on average. The repair times follow an exponential distribution. What is the utilization rate of the service system? What is the average down time for a machine that is broken? How many machines are waiting to be...
The number X of people entering the intensive care unit at a particular hospital in any...
The number X of people entering the intensive care unit at a particular hospital in any one day has a Poisson probability distribution with a mean of 5 people per day. a) What is the probability that more than one person enters the intensive care unit on a particular day? b)Find E(X^2)
The amount of insurance (in thousands of dollars) sold in a day by a particular agent is uniformly distributed over the interval [15, 65). A. What amount of insurance does the agent sell on an average day? B. Find the probability that the agent sells more than $55,000 of insurance on a particular day. A. The agent sells $ of insurance on an average day. B. The probability that the agent sells more than $55,000 of insurance on a particular...
A study reports that teenagers drink an average of 22 ounces of soda per day with a standard deviation of 6 ounces. Assume that the distribution of the number of ounces of soda consumed by teenagers per day follows a normal distribution. a. What is the probability that a randomly selected teenager consumes less than 12 ounces of soda per day? b. What is the probability that a randomly selected teenager consumes more than 30 ounces of soda per day?...
The amount of insurance (in thousands of dollars) sold in a day by a particular agent is uniformly distributed over the interval [20, 85). A. What amount of insurance does the agent sell on an average day? B. Find the probability that the agent sells more than $55,000 of insurance on a particular day. A. The agent sells $ 52,500 of insurance on an average day. B. The probability that the agent sells more than $55,000 of insurance on a...
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