Suppose that in the bookkeeping operation of a large corporation the probability of a recording error on any one billing is 0.005.Suppose the probability of a recording error from one billing to the next is constant, and 1,000 billings are randomly sampled by anauditor.a. What is the probability that fewer than six billings contain a recording error?b. What is the probability that more than 11 billings contain a billing error?c. What is the probability that exactly two billings contain a recording error?(Round your answers to 4 decimal places when calculating using Table A.3, e.g. 0.2153.)a. P(x < 6) =b. P(x > 11) =c. P(x = 2) =Save for Later

Givenp=0.005n=1000Let "x" be the billings contain a…

Answered: Suppose that in the bookkeeping…

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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Suppose 22% of students at a certain university are out of state students. A professor takes a random sample of 50 students. Let X = the number of out of state students in the sample. a. how many students are expected to be out of state? by how much does this vary? b. what is the probability that 10 will be out of state? c. what is the probability that 10 or fewer will be out of state? d. what is the probability that fewer than 10 will be out of state?
It has been estimated that only about 25% of residents in Ventura County have adequate earthquake supplies. Suppose you randomly survey 5 residents in the County. Let X be the number of residents who have adequate earthquake supplies. Please show the following answers to 4 decimal places. a. What is the probability that exactly 2 residents who have adequate earthquake supplies in this survey? b. What is the probability that less than 2 residents who have adequate earthquake supplies in this survey? c. What is the probability that at most 2 residents who have adequate earthquake supplies in this survey? d. What is the probability that between 1 and 3 (including 1 and 3) residents who have adequate earthquake supplies in this survey?
es The Internal Revenue Service is studying the category of charitable contributions. A sample of 25 returns is selected from young couples between the ages of 20 and 35 who had an adjusted gross income of more than $100,000. Of these 25 returns, five had charitable contributions of more than $1,000. Four of these returns are selected for a comprehensive audit. a. The hypergeometric distribution is appropriate because it is Osampling a small population without replacement. O sampling a small population with replacement. O sampling a large population without replacement. b. What is the probability exactly one of the four audited had a charitable deduction of more than $1,000? (Round your answer to 4 decimal places.) Probability
Read the following prompt and complete 1.a, 1.b, 1.c
A typical fuel tanker can carry up to 40,000 L of fuel and can be loaded in about 20 minutes. The shift supervisor comes to check on one of the tankers, not knowing how much time is left in the fill process. a. What is the probability that there is less than 5,000 L remaining? b. What is the probability that there is between 15,000 L and 25,000 L of fuel remaining? c. What volume of fuel would the shift supervisor expect the tanker to contain? L
1. The probability that a manufactured bulb works properly is 98%. a. In a pack of six, what's the probability that all bulbs work? b. In a pack of six, what's the probability that 4 or less work? c. In a pack of 8, what's the probability that more than 5 work? d. In a pack of 10, what's the probability that exactly half work? In a pack of 4, what's the probability that all are broken?
Suppose a math class contains 37 students. There are 19 females (six of whom speak Spanish) and 18 males (five of whom speak Spanish). Give all answers as decimals to at least two decimal places.1. What is the probability that a randomly selected student speaks Spanish, given that the student is female? 2. What is the probability that a randomly selected student does not speak Spanish, given that the student is male? 3. What percent of Spanish speaking students are male? 4. If someone does not speak Spanish what is the probability they are female?
Year 1 Discussion Questions 2. The following is the experience of Insurer A for the last three years: a. What is the frequency of losses in year 1? b. Calculate the probability of a loss in year 1. c. Calculate the mean losses per year for the collision claims and losses. d. Calculate the mean losses per exposure. e. Calculate the mean losses per claim.. f. What is the frequency of the losses? g. What is the severity of the losses? Number of Exposures 10,000 10,000 10,000 Number of Collision Claims 375 030 420 Collision Losses (5) 350,000 250,000 400,000
Suppose that 30 percent of an adult population have an infectious disease and 40 percent have achronic disease. Assume that having an infectious disease is independent from having a chronicdisease. For each of the questions below perform the calculation using appropriate statisticalnotation.a. What is the probability that a person selected at random will have both diseases?b. What is the probability of having the infectious disease for people with the chronic disease?c. What is the probability of having the infectious disease for people without the chronic disease?d. What is the probability of not having the infectious disease for people with the chronicdisease?
Consider records of a company’s account balances. Twenty percent contain errors. Of those balance in errors, 80% are regarded as unusual values based on historical figures. Of all the account balances, 25% were unusual values. If the figure for a particular balance appears unusual on this basis, what is the probability that it is in error?

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