Dr. X was interested in studying the hand-washing habits of York KINE students, so they sampled 100 KINE students andfound that students on average wash their hands 125 times a month, with an SEM of 3. What is the probability thatstudents wash their hands more than 146 times a month?a. 75.8%b. 0.50%C. 24.2%d. 0.01%e. 99.9%f. 50%g. 71.19%

Given that Sample size n =100 Population mean μ =125 SEM=3

Answered: Dr. x was interested in studying the…

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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In a survey, LATTC students were asked how many hours they study per week. Their responses are summarized in the following table: Male Female Total Less than 5 200 450 650 Between 5 and 10 160 350 510 More than 10 120 230 350 If one student is randomly selected: What is the probability the student studied more than 10 hours per 0.3179 0.2318 0.6821 0.3377 week? Total 480 1030 1510
Fender BenderThe article, “Should You Report That Fender-Bender?” (Consumer Reports, 2013:15), reported that 7 in 10 automobile accidents involve a single vehicle. A random sample of 25 accident reports is selected. Answer the following questions. Include your calculator functions or Excel commands for each probability question and round your answers to 4 digits. a What is the probability that exactly 8 accidents involve a single vehicle? b.What is the probability that at most 13 accidents involve a single vehicle? c.What is the probability that at least 5 accidents involve a single vehicle? d.What is the probability that fewer than 15 accidents involve a single vehicle? e.What is the probability that more than 18 accidents involve a single vehicle? Find the mean and standard deviation of the accidents that involve a single vehicle. Show your formula setup and your work. Use proper symbols.
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Based on a poll, 67% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that among three randomly selected Internet users, at least one is more careful about personal information when using a publicWi-Fi hotspot? How is the result affected by the additional information that the survey subjects volunteered to respond?
In a certain country, 47 percent of the population are on a strict diet. In a sample of 20 individuals, what is the probability that exactly 6 individuals are on a strict diet? Select one: O a. 0.0260 O b. 0.1023 O c. 0.0577 O d. 0.1474
Every year, many people hiking the Australian Outbacks are reported to be lost, and around 44% of them are eventually found by rescue missions. 73% of the people who were rescued were found to carry an emergency GPS locator, whereas 25% of the people who were not rescued were known to carry a similar locator. a. If a lost hiker is carrying an emergency GPS locator, what is the probability of them being rescued? Answer in exact fraction, or rounded to at least 4 decimal places b. If a hiker gets lost without a GPS locator, what is the probability that they will not get rescued? Answer in exact fraction, or rounded to at least 4 decimal places
A study of consumers smoking habits include 160 people in the 18-22 age bracket (49 of whom smoke), 133 people in the 23-30 age bracket (37 of whom smoke), and 85 people in the 31-40 age bracket (21 whom smoke). If one person is randomly selected from this sample, find the probability of getting someone who is age 18-22 or does not smoke.
In an experiment, college students were given either four quarters or a $1 bill and they could either keep the money or spend it on gum. The results are summarized in the table. Students Given Four Quarters Students Given a $1 Bill O.A.0.659 Find the probability of randomly selecting a student who spent the money, given that the student was given four quarters. OB.0.675 OC.0.292 Purchased Gum 27 14 OD.0.307 Kept the Money 13 34
A project conducted by the Australian Federal Office of Road Safety asked people many questions about their cars. One question was the reason that a person chooses a given car, and that data is in table #4.1.4 ("Car preferences," 2013). Table #4.1.4: Reason for Choosing a Car Safety Reliability Cost Performance Comfort Looks 84 62 46 34 47 27 Find the probability a person chooses a car for each of the given reasons
Of all 3- to 5-year-old children, 56% are enrolled in school. If a sample of 500 such children is randomly selected, find the probability that the sample proportion of students who are enrolled in school is greater than 0.5.
Question Completion Status: Moving to another question will save this response. Question 32 A barbershop requires appointments for perms and haircuts. Ten percent of those making appointments cancel or simply fail to show up. Next week's appointment calendar has 64 appointments. let x be the number of missed appointments out of the 64. The probability that more than 2 cancellations and/or no-shows will occur during the next week is: 0.9611 0.1063 Ob. 0.7795 C d. 0.8937 0.3784 Moving to another question will save this response. 22 tv A Question 32 of 35 CA Question 32 of 35
The proportions of blood phenotypes A, B, AB, and O in the population of all Caucasians in the United States are reported as .40, .11, .04, and .45, respectively.¹ If a single Caucasian is chosen randomly from the population, what is the probability that he or she will have either type A or type AB blood?

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