University of the People MATH 1280Unit 6 Self-Quiz

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Home ► My courses ► MATH 1280 - AY2018-T5 ► 26 July - 1 August ► Self-Quiz Unit 6 Information Question 1 Incorrect Mark 0.00 out of 1.00 Question 2 Correct Mark 1.00 out of 1.00 Star... ted on Monday, 30 July 2018, 10:07 PM State Finished Completed on Tuesday, 31 July 2018, 7:17 PM Time taken 21 hours 9 mins Marks 24.00/27.00 Grade 8.89 out of 10.00 (89%) According to some study, the height for Northern European adult males is normally distributed with an average of 181 centimeter and a standard deviation of 7.3 centimeter. Suppose such an adult male is randomly chosen. Let X be height of that person. The next 3 questions correspond to this information. The answer may be rounded up to 3 decimal places of the actual value. The probability that the person is between 160 and 170 centimeters is Answer: 0.6391543 The distribution of X is Normal(181,(7.3) ). The Probability of the interval is equal to the difference between P(X ≤ 170) and P(X ≤ 160) > pnorm(170,181,7.3) - pnorm(160,181,7.3) [1] 0.06391543 The correct answer is: 0.06391543 The probability that the person is higher than 190 centimeter is Answer: .1088109 The distribution of X is Normal(181,(7.3) ). The Probability of being larger than 190 is equal to the difference between 1 and P(X ≤ 190) > 1 - pnorm(190,181,7.3) [1] 0.1088109 The correct answer is: 0.1088109 [Show More]

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