Jimmy is the education consultant of a tutorial school, which arranges preparatory classes for the IELT examination. He randomly checks the mock examination result of 22 students in the school and the results are as follow:7.9 8.2 7.8 5.4 6.8 6.8 7.1 7.2 7.9 8.1 7.67.8 5.8 6.3 7.7 7.7 8.3 8.3 4.7 5.1 7.3 6.5(a) There are 18 students in Alex’s class. By using the sampled data as a reference to project the chance an individual student can get more than 6 marks and assume students’ result is independent, calculate the probability that more than 80% of Alex’s students can score higher than 6 marks in the mock examination.

Jimmy is the education consultant of a tutorial school, which arranges preparatory classes for the IELT examination. He randomly checks the mock examination result of 22 students in the school and the results are as follow:7.9 8.2 7.8 5.4 6.8 6.8 7.1 7.2 7.9 8.1 7.67.8 5.8 6.3 7.7 7.7 8.3 8.3 4.7 5.1 7.3 6.5(a) There are 18 students in Alex’s class. By using the sampled data as a reference to project the chance an individual student can get more than 6 marks and assume students’ result is independent, calculate the probability that more than 80% of Alex’s students can score higher than 6 marks in the mock examination.

Name: Jimmy is the education consultant of a tutorial school, which arranges
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Description: Jimmy is the education consultant of a tutorial school, which arranges preparatory classes for the IELT examination. He randomly checks the mock examination result of 22 students in the school and the results are as follow:7.9 8.2 7.8 5.4 6.8 6.8 7.1

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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