At a company a central computer is used in half of the working time inaccountancy related to income, in 2/5 of the time in accountancy related toexpenditure, and in the remaining time in accountancy related to taxes. Thecomputer is idle in 15% of the time, if it is allocated to processing income; 9% ofthe time, if it is allocated to processing expenditure; and 18% of the time, if it isallocated to processing taxes. The probability that the computer is idle at arandomly chosen moment is0.093 || 0.129|| 0.111| 0.054

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Answered: At a company a central computer is used…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A local TV station employs Desmorelda, “Mistress of the Zodiac”, as its weather forecaster. She predicts a rainy day on the basis of Lunar phases. From statistical data (which is available to Desmorelda too) it is known that the probability of a rainy day during the Full Moon is 0,478, during the Third Quarter – 0,513, during the New Moon – 0,499, and during the First Quarter – 0,506. All phases last equally and the whole Lunar cycle takes 28 days. What is the probability that on a certain day Desmorelda will predict rain?
Suppose that 75% of science students, 45% of business students, and 45% of humanities students pass a mathematics course. If 15% of the students in the course are science students, 15% are business students and 70% are humanities students, then the probability that a randomly selected student who has passed the course is a science student is O a. 0.429 O b. 0.214 O c. 0.525 d. 0.357 O e. 0.643
Please do question 1f and 1g handwritten
Consider the number of blocks on the master file that are read before the first block is updated. Each day, the transaction file is run against the master file and approximately 4% of master blocks are updated. If 10 blocks were read without needing to be updated, what is the probability that the first update will occur in the 14th block? Question 4 options: a 0.729 b 0.0354 c 0.271 d 0.0233
A lottery has a grand prize of $300,000, four runner-up prizes of $37,500 each, ten third-place prizes of $6000 each, and twenty-two consolation prizes of $3000 each. If 1,200,000 tickets are sold for $1 each and the probability of any one ticket winning is the same as that of any other ticket winning, find the expected net winnings on a $1 ticket. (Round your answer to two decimal places.) $52 x please answer in typing format
From experience, a wheat farmer living in Manitoba, Canada finds that his annual profit (in Canadian dollars) is $80,000 if the summer weather is typical, $50,000 if the weather is unusually dry, and $20,000 if there is a severe storm that destroys much of his crop. Weather bureau records indicate that the probability is 0.70 of typical weather, 0.20 of unusually dry weather, and 0.10 of a severe storm. Let X denote the farmer's profit next year (a) Construct a table with the probability distribution of X. (b) What is the probability that the profit is $50,000 or less? (c) Find the mean of the probability distribution of X. Interpret. (d) Suppose the farmer buys insurance for $3000 that pays him $20,000 in the event of a severe storm that destroys much of the crop and pays nothing otherwise. Find the probability distribution of his profit. Find the mean and summarize the effect of buying this insurance.
a and b working together can do a given job in 4 days, b and c together can do the job in 3 days, and a and c together can do it in 2.4 days. in how many days can they finish the job all together? Answer is 7 days. Please show your solution.
An analyst attempting to predict a corporation’s earnings next year believes that the corporation’s business is quite sensitive to the level of interest rates. He believes that, if average rates in the next year are more than 1% higher than this year, the probability of significant earnings growth is 0.1. If average rates next year are more than 1% lower than this year, the probability of significant earnings growth is estimated to be 0.8. Finally, if average interest rates next year are within 1% of this year’s rates, the probability for significant earnings growth is put at 0.5. The analyst estimates that the probability is 0.25 that rates next year will be more than 1% higher than this year and 0.15 that they will be more than 1% lower than this year.a. What is the estimated probability that both interest rates will be 1% higher and significant earnings growth will result?b. What is the probability that this corporation will experience significant earnings growth?c. If the…

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