O b. At most 0.0143ast 210 is = (Use Chebyshev's theorem)O C. At least 0.0154O d. At most 0.0154QUESTION 12A certain type of engines lasts, on average, 4.0 years with a standard deviation of 1 year. Assuming that the engine lifetimes are normally distributed, the probabilitthat a given machine will last less than 3.6 years isO a. 0.3446O b. 0.4443Oc.0.3085O d. 0.6554QUESTION 13Click Save and Submit to save and submit. Click Save All Answers to save all answers.hp 0.44431bled, the probabilityOc. 0.3085O d. 0.6554QUESTION 131. For a random variable with the given probability distribution.12.340.160.050.01f(x)0.410.37P(0 3) =O a. 0.52O a. 0.93c. 0.47O d. 0.53lick Save and Submit to save and submit. Click Save All Answers to save all answers.hp

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Description: O b. At most 0.0143ast 210 is = (Use Chebyshev's theorem)O C. At least 0.0154O d. At most 0.0154QUESTION 12A certain type of engines lasts, on average, 4.0 years with a standard deviation of 1 year. Assuming that the engine lifetimes are normally di

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QUESTION 12 A certain type of engines lasts, on average, 4.0 years with a standard deviation of 1 year. Assuming that the engine lifetimes are normally distributed, the pr- hat a given machine will last less than 3.6 years is O a. 0.3446 O b.0.4443 c. 0.3085 O d. 0.6554

QUESTION 12 A certain type of engines lasts, on average, 4.0 years with a standard deviation of 1 year. Assuming that the engine lifetimes are normally distributed, the pr- hat a given machine will last less than 3.6 years is O a. 0.3446 O b.0.4443 c. 0.3085 O d. 0.6554

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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Question 14
QUESTION 7 A graduate school program in Statistics will only admit students with GRE quan- titative scores in the top 20%. GRE scores from previous years are found to be approximately Gaussian with median 158 and standard deviation 3. What is the lowest GRE score it will accept? 158.6 155.47 140.40 160.54
QUESTION 6 A team of researchers is investigating a drug for reducing systolic blood pressure. A group of 6 subjects was selected in this study. The systolic blood pressures were measured before and after the treatment with this drug and are listed the table above. This team wishes to test whether there is a statistically significant reduction in blood pressure after the use of the drug treatment. If the assumption of normality is accepted, which of the following conclusions is(are) correct using a t-test? Subject ID 1 2 4 6 Before 144 152 155 149 151 148 After 143 152 148 145 144 147 The p-value of the test is .012. The p-value of the test is .024. The p-value of the test is .048. The p-value of the test is .096.
QUESTION 3 On a class exam, students' scores followed a Gaussian distribution. The class averaged 77 points with a standard deviation of 5. Find the exam score for a student who has a relative standing of Z=2. HINT: The "Empirical Rule" can be used to help draw the scale of any normal distribution. Recall that approximately 68% of the data lies within 1 standard deviation of the mean, approximately 95% lies within 2 standard deviations, and approximately 99% falls within 3 deviations of the mean. O a. 70 O b.87 OC. 50 O d. 62
QUESTION 3 A certain type of engines lasts, on average, 4 years with a standard deviation of 1.4 years. Assuming that the engine lifetimes are normally distributed, the probability that a given machine will last less than 3.5 years is O 0.1406 0.3594 O 0.6406
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Question 12 Statistics from Cornell's Northeast Regional Climate Center indicate that Ithaca, NY gets an average of 35.4" of rain each year, with a standard deviation of 4.2". Over a selected period of four years, let y represent the sample average amount of rainfall over that four-year period (n = 4). Assume that rainfall amount in Ithaca, NY follows a Normal model. Which of the following is the best statement for why the sample average rainfall amount over the four year period X will follow a Normal Model? O a. Because the population mean is greater than 30" O b. Because the population itself follows a Normal Model O C. Because the data is quantitative O d. Because the sample size is less than 30 « < Question 12 of 21 A Moving to another question will save this response. Close Window Preview dtv 3口 F3 gg8 F4 F6 esc F1 & $ 4 # 8 3 5 2 Y Q W E tab G K F :lock C V しの

Question 13 Assume you have an Exponential Distribution with parameter of 0.19 Find P(x > 6.1) round to the nearest thousandth
Question 94 parts A and B
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