MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Topic Video
Question
![Assume that 22.2% of people have sleepwalked. Assume that in a random sample of 1503 adults, 345 have sleepwalked.
a. Assuming that the rate of 22.2% is correct, find the probability that 345 or more of the 1503 adults have sleepwalked.
b. Is that result of 345 or more significantly high?
c. What does the result suggest about the rate of 22.2%?
---
a. Assuming that the rate of 22.2% is correct, the probability that 345 or more of the 1503 adults have sleepwalked is ________.
(Round to four decimal places as needed.)
b. Is that result of 345 or more significantly high?
\[ \_ \] because the probability of this event is \[ \_ \] than the probability cutoff that corresponds to a significant event, which is \[ \_ \].
c. What does the result suggest about the rate of 22.2%?
- O A. Since the result of 345 adults that have sleepwalked is significantly high, it is strong evidence against the assumed rate of 22.2%.
- O B. Since the result of 345 adults that have sleepwalked is not significantly high, it is not strong evidence supporting the assumed rate of 22.2%.
- O C. Since the result of 345 adults that have sleepwalked is not significantly high, it is not strong evidence against the assumed rate of 22.2%.
- O D. Since the result of 345 adults that have sleepwalked is not significantly high, it is strong evidence against the assumed rate of 22.2%.
- O E. The results do not indicate anything about the scientist's assumption.
- O F. Since the result of 345 adults that have sleepwalked is significantly high, it is not strong evidence against the assumed rate of 22.2%.
---
"Click to select your answer(s)."](https://content.bartleby.com/qna-images/question/6ca73dc4-0ace-4004-adab-db8ac9d0dc1d/9dddc49f-3788-4cb9-9ca9-3f9a71c50d0b/1m6d45b_processed.jpeg)
Transcribed Image Text:Assume that 22.2% of people have sleepwalked. Assume that in a random sample of 1503 adults, 345 have sleepwalked.
a. Assuming that the rate of 22.2% is correct, find the probability that 345 or more of the 1503 adults have sleepwalked.
b. Is that result of 345 or more significantly high?
c. What does the result suggest about the rate of 22.2%?
---
a. Assuming that the rate of 22.2% is correct, the probability that 345 or more of the 1503 adults have sleepwalked is ________.
(Round to four decimal places as needed.)
b. Is that result of 345 or more significantly high?
\[ \_ \] because the probability of this event is \[ \_ \] than the probability cutoff that corresponds to a significant event, which is \[ \_ \].
c. What does the result suggest about the rate of 22.2%?
- O A. Since the result of 345 adults that have sleepwalked is significantly high, it is strong evidence against the assumed rate of 22.2%.
- O B. Since the result of 345 adults that have sleepwalked is not significantly high, it is not strong evidence supporting the assumed rate of 22.2%.
- O C. Since the result of 345 adults that have sleepwalked is not significantly high, it is not strong evidence against the assumed rate of 22.2%.
- O D. Since the result of 345 adults that have sleepwalked is not significantly high, it is strong evidence against the assumed rate of 22.2%.
- O E. The results do not indicate anything about the scientist's assumption.
- O F. Since the result of 345 adults that have sleepwalked is significantly high, it is not strong evidence against the assumed rate of 22.2%.
---
"Click to select your answer(s)."
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- The mileage (in 1,000s of miles) that car owners get with a certain kind of radial tire is a random variable having an exponential distribution with a mean of 50. a. What is the probability that a tire will last at most 40,000 miles? b. What is the probability that a tire will last at least 65,000 miles? c. What is the probability that a tire will last between 70,000 and 80,000 miles?arrow_forwardIf a seed is planted, it has a 55% chance of growing into a healthy plant. Let X be the number of seeds grow into healthy plants when 55 seeds are planted. a. What is the distribution of X?X - ? ✓ Please show the following answers to 4 decimal places. b. What is the probability that exactly 30 seeds grow into healthy plants? c. What is the probability that at most 30 seeds grow into healthy plants? d. What is the probability that more than 30 seeds grow into healthy plants? e. What is the probability that between 25 and 32 (including 25 and 32) seeds grow into healthy plants?arrow_forwardThe probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In nine traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. d. Obtain the standard deviation of Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your response here. (Round to four decimal places as needed.) Part 2 The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your response here. (Round to four decimal places as needed.) Part 3 The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your…arrow_forward
- When studying radioactive material, a nuclear engineer found that over 365 days, 1,000,000 radioactive atoms decayed to 974,425 radioactive atoms, so 25,575 atoms decayed during 365 days. a. Find the mean number of radioactive atoms that decayed in a day. b. Find the probability that on a given day, 52 radioactive atoms decayed.arrow_forward10.2.% of the population is 65 or older . Find the probability that the following number of persons selected at random from 50 people are 65or older . The probability that at most 2 are 65 or older is ?arrow_forwardQ5: Assume that 75% of all employees at York University are in favor of unionization. A sample of 50 York employees were taken. a. Show the sampling distribution of the proportion of the employees at York University are in favor of unionization. b. What is the probability that the sample proportion will be within ±0.03 of the population proportion?arrow_forward
- You are a doctor ,a and on average you meet with 30 patients per day. Assuming the NHANES dataset is representative of your patient population, calculate the following. 1. The probability of a single individual having health insurance. = 0.8807812125569134 2. The probability that 3 people in a row will not have health insurance. 3. The probability that 1/3 of your 30 patients for the day do not have health insurancearrow_forwardThe probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In six traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. d. Obtain the standard deviation of Y. Only typing answer Please explain step by steparrow_forward6.6arrow_forward
- The probability is 0.4 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In six traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) b. The probability that between two and four…arrow_forwardToss five fair coins and let x equal the number of heads observed. a. Identify the sample points associated with this experiment, and assign a value of x to each sample point. Then list all the possible values of x. b. Calculate p(x) for the values x = 1 and x = 2. c. Construct a probability histogram for p(x). d. What is P(x = 1 or x = 4)?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning 
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman