9 Suppose a testing service is to administer a standardized test at a given location on a certain test date, and only students who have preregistered can take the test. Suppose 60 stu- dents preregistered, and each of those students actually shows up to take the test with probability p= 5/6. Let X denote the number of preregistered students showing up to take the test. (a) Using the Gaussian approximation with the continuity correction, find the approximate numer- ical value of P{X ≤ 52}. (b) Similarly, find the approximate numerical value of P{X-50 ≥ 6}. (c) Find the Chebychev upper bound on P{X-50 ≥ 6}. Compare it to your answer to part (b).
9 Suppose a testing service is to administer a standardized test at a given location on a certain test date, and only students who have preregistered can take the test. Suppose 60 stu- dents preregistered, and each of those students actually shows up to take the test with probability p= 5/6. Let X denote the number of preregistered students showing up to take the test. (a) Using the Gaussian approximation with the continuity correction, find the approximate numer- ical value of P{X ≤ 52}. (b) Similarly, find the approximate numerical value of P{X-50 ≥ 6}. (c) Find the Chebychev upper bound on P{X-50 ≥ 6}. Compare it to your answer to part (b).
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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