2. 14 70 418 6> 19 10 George, a network engineer, ordered 764 CAT 5e Ethernet cables for use at his company's network. After receiving these cables, he decided to randomly test 165 of these cables before using them. He was alarmed to find out that 73% of these cables failed completely. He returned the entire lot to the manufacturer. When he tested the cables, what was George's sample? Round to the nearest integer. O A. 165 cables O B. 764 cables Oc. 120 cables O D. 558 cables O E. 206 cables Click to select your answer. MacBook Air 40) >> 20 F3 F10 FI esc F6 F7 F8 F9 FI F2 @ #3 & 5 7 8 Q W Y U tab

2. 14 70 418 6> 19 10 George, a network engineer, ordered 764 CAT 5e Ethernet cables for use at his company's network. After receiving these cables, he decided to randomly test 165 of these cables before using them. He was alarmed to find out that 73% of these cables failed completely. He returned the entire lot to the manufacturer. When he tested the cables, what was George's sample? Round to the nearest integer. O A. 165 cables O B. 764 cables Oc. 120 cables O D. 558 cables O E. 206 cables Click to select your answer. MacBook Air 40) >> 20 F3 F10 FI esc F6 F7 F8 F9 FI F2 @ #3 & 5 7 8 Q W Y U tab

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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According to a report, 71.9% of murders are committed with a firearm. (a) If 400 murders are randomly selected, how many would we expect to be committed with a firearm? (b) Would it be unusual to observe 312 murders by firearm in a random sample of 400 murders? Why? (a) We would expect to be committed with a firearm. (b) Choose the correct answer below. A. Yes, because 312 is greater than u + 20. B. No, because 312 is between u - 20 and H+ 20. O C. No, because 312 is greater than p + 2o. D. No, because 312 is less than u - 20. E. Yes, because 312 is between u - 20 and u + 20.
7. 40% of consumers believe that cash will be obsolete in the next 20 years based on a survey by J.P. Morgan Chase. Eight consumers are randomly selected and the number who believe cash will be obsolete is recorded. X 0 1 2 3 4 5 6 7 8 P(x) 0.017 0.090 0.209 0.124 0.041 0.008 0.001 Fill in the missing values from the table and identify each of the following characteristics used to construct the distribution: n= p= Discuss the three characteristics of the distribution. Shape: Center: Spread: Find the probability that exactly 4 people believe that cash will be obsolete. Find the probability that between 3 and 7 people believe that cash will be obsolete. Find the probability that at most 3 people believe that cash will be obsolete. x=
In a memory test, the test subjects are given a large number and are asked to memorize it. Historical records show that 80% of test subjects pass the test. To pass the test, a subject must exactly repeat all the digits in the number after two hours. A random sample of 625 people to take the memory test is going to be chosen. Let p be the proportion of people in the sample who pass the test. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of P. 0 (b) Find the standard deviation of p. 0 (c) Compute an approximation for P(P >0.84), which is the probability that more than 84% of the people in the sample pass the test. Round your answer to four decimal places. 0 X
To compare the effects of four different chemicals in producing water restance in textiles, a strip of material randomply selected from a bolf of chemical was cut ito four pieces were randomply assigned to receive an application of one of the chemicals A, B, C, or D. Low readings indicate low moisture penetration. Refer to the table below. Is there a significant difference among the four chemicals? Write Fobserved in terms of bolt samples. Use 6 decimal places in your final answer. Write zero before the decimal point if the answer is less than one. Bolt Samples 1 2 3 Chemical 10.1 12.2 11.9 A Chemical 11.4 12.9 12.7 В Chemical 9.9 12.3 11.4 Chemical 12.1 13.4 12.9
Dr. Wagner is interested in conducting a 2 x 2 x 3 within-group factorial design, with 20 participants in each cell. How many participants does she need overall? a. 40 b. 240 c. 20 d. 80
According to research, 55% of millennials (those born between 1981 and 1997) reported using a library or bookmobile within the last year. Suppose that a random sample of 200 millennials is taken. Complete parts a and b below. Since 195 is a. Complete this sentence: We would expect We would expect 110 of the sample to have used a library or bookmobile within the last year, give or take (Round to the nearest integer as needed.) b. Would it be surprising to find that 195 of the sample have used a library or bookmobile within the last year? Why or why not? be surprising. ▼than 2 of the sample to have used a library or bookmobile within the last year, give or take 1. from the it
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A researcher wants to determine the sensitivity of mammograms to determine how effective they are at diagnosing women who have breast cancer. Assume the researcher obtained the above results from a study, calculate and interpret the sensitivity of mammograms for detecting breast cancer. Frequency of Breast Cancer Cases Frequency of Non-Cancer Cases Frequency of Individuals Who Screened Positive 17 5 Frequency of Individuals Who Screened Negative 8 77 Group of answer choices: a. A total of 66.67% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. b. A total of 68% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. c. A total of 70.59% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. d. A total of…
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An education researcher claims that 59% of college students work year-round. In a random sample of 600 college students, 354 say they work year-round. At a=0.10, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.). OA. At least % of college students work year-round. OB. At most % of college students work year-round OC. The percentage of college students who work year-round is not % OD.% of college students work year-round Let p be the population proportion of successes, where a success is a college student who works year-round. State Ho and H₂ Select the correct choice below and fill in the answer boxes to complete your choice (Round to two decimal places as needed.). OA. Ho: P> Ha ps OD. Ho P= H₂: p (b) Find the critical value(s) and identify the rejection region(s) Identify…
According to a report, 62.8% of murders are committed with a firearm. (a) If 100 murders are randomly selected, how many would we expect to be committed with a firearm? (b) Would it be unusual to observe 73 murders by firearm in a random sample of 100 murders? Why? (a) We would expect to be committed with a firearm. (b) Choose the correct answer below. A. Yes, because 73 is greater than u + 20. B. No, because 73 is less than u - 20. C. Yes, because 73 is between u - 20 and u + 20. D. No, because 73 is between u - 20 and u + 20. E. No, because 73 is greater than u + 20.
A choral conductor has 1885 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1885, so she instead asks 630 singers in front and finds 17 who are professionals. (a) Identify the sample.A. 17/1885B. 630C. singers who were askedD. None of the above. (b) Identify the populationA. percentage of entire singers who are professionalB. entire singersC. 17/1885D. None of the above. (c) What specific type of bias does this scenario demonstrate?A. Voluntary response samplingB. Convenience SamplingC. It is representative of the population.D. None of the above. (d) Identify the parameterA. range of values in which 95% values fallB. percentage of entire singers who are professionalC. 17D. None of the above.