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 26 The monthly salaries of employees of a construction company is normally distributed and averaged at AED 14000 with a standard deviation of AED 1600. Find the minimum and the maximum salaries symmetrically distributed around the population mean, that will include 75% of the sample means X, based on samples of 16 employees. Round your answer to the nearest dirham.
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Question 28 0.5 pts The demand for a product is normally distributed with a mean of 25 units per day and a standard deviation of 3 units per day. The lead time for this product is normally distributed with a mean of 10 days and a standard deviation of 4 days. The reorder points for 50% service level and 95% service levels are and respectively. O0 and 415 O 250 and 415 O 0 and 250 O 415 and 0 O0 and 0
question 26 Women are recommended to consume 1730 calories per day. You suspect that the average calorie intake is different for women at your college. The data for the 16 women who participated in the study is shown below: 1848, 2005, 1881, 1983, 1865, 2037, 1804, 1615, 1605, 1715, 1623, 1580, 1842, 1957, 1937, 1853 Assuming that the distribution is normal, what can be concluded at the αα = 0.01 level of significance? The null and alternative hypotheses would be: Ho: u= ___________ Ho: u _____________ 2.The test statistic ________ (please show your answer to 3 decimal places.) 3. The p-value = ___________ (Please show your answer to 4 decimal places.)
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
Question 6 x is a normally normally distributed variable with mean µ = 21 and standard deviation o = 4. Find P(x >10). 0.0275 0.7143 0.0030 0.9970
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 94 parts A and B