Who prepares your tax return? As part of a study onincometax compliance (Behavioral Research andAccounting, January 2015), researchers found that 37% ofadult workers prepare their own tax return. Assume thatthis percentage applies to all U.S. adult workers. Now con-sider a random sample of 270 adult workers.a. Find the probability that more than 112 of the workersprepare own tax return.theirb. Find the probability that between 100 and 150 of theworkers their own tax return.prepare

Use the ‘conditions for normal approximation to the binomial distribution’ to determine whether X…

Answered: Who prepares your tax return? As part…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that you and two friends go to a restaurant, which last month filled approximately 78 %78% of the orders correctly. Complete parts (a) through (d) below. a. What is the probability that none of the three orders will be filled correctly?
The magazine Sports Illustrated asked a random sample of 250 Division I college athletes, "Do you believe performance enhancing drugs are a problem in college sports?" Suppose that 30% of all Division I athletes think that these drugs are a problem. What is the probability that more than 35% of those interviewed admit performance enhancing drugs are a problem in college sports? a 0.2376 O b 0.5721 O c 0.9578 O d 0.0422
In recent years research suggests that cell phone usage during social interactions leads to distractions, which undermines the benefits of social interaction. A recent report by greater good magazine reports that a survey shows that 82% of people report that the use of cell phones during a conversation decreases the quality and what they talk about. Assuming the greater good magazine report is accurate, and then a random sample of cell phone users during A recent conversation were sampled. You are interested in the probability that a specific number of the cell phones users would report that the use of cell phones during a conversation decreases the quality of what they talk about.
The report “Addiction Medicine: Closing the Gap between Science and Practice” from the National Center on Addiction and Substance Abuse at Columbia University reveals that addiction treatment is neglected by the medical system in the United States. It shows, in particular, that 15% of Americans have the disease of addiction and that 80% of them receive no form of treatment. Determine the probability that a randomly selected American has the disease of addiction and receives no form of treatment. Interpret your answer in terms of percentage.
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In a class of students, the following data table summarizes how many students passed a test and complete the homework due the day of the test. What is the probability that a student chosen randomly from the class did not complete the homework? Passed the test Failed the test Completed the homework 11 7 Did not complete the homework Answer: Submit Answer attempt 4 out of 4 problem 1 out of max 1
Sixty percent of clowns aren’t funny. If you randomly encounter three different clowns, what is the probability that none of them are funny?
The 2015 National Vital Statistics Report provides information on how the nearly four million live births that occurred in 2014 broke down by birth order. Choose at random a baby born in the United States in 2014. Baby's birth order Probability mean = 1 2 0.391 0.319 The few babies who were 9th or more in birth order are included in the "8" birth order group. In 2014, 39.1% of the nearly 4 million live births in the United States were to first-time mothers. 3 5 6 7 4 0.168 0.072 0.028 0.012 0.005 standard deviation = What are the properties of the sampling distribution of the proportion of births to first-time mothers in random samples of 500 births from 2014? (Enter your answer for the mean rounded to three decimal place and your answer for the standard deviation rounded to four decimal places.) 8 0.005
Five percent of all blue ray players manufactured by a large electronics company are defective. A quality control inspector randomly selects three players from the production line. What is the probability that exactly one of these three blue ray players is defective?

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