19) A group of 51 randomly selected stalets have a mean scoe of 293 wh dof 52 on a placement test. What is the 90 confidence inneral for the mean soomstudents taking the test?A) 28.8 << 302 B) 283 << 30.7Q 27.8 << 31.2 D) 27.9 << 31.1

Answered: Image /qna-images/answer/672edd81-a241-4672-93fd-1f7e09515aec.jpg

Answered: 19) A group of 51 randomly selected…

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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historically , a certain region has experienced 65 thunder days annually. A "thunder day" is a day on which at least one instance of thunder is audible to a normal human ear. over the past eleven years, the mean number of thunder days is less than 65. use α = 0.01 level of significance. A) there is not enough information to draw a conclusion B), yes. the number of thunder days appears to be less than 65 C). No. there is insufficient evidence to conclude that the number of thunder days is less than 65
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19) A group of 51 randomly selected stalets have a mean scoe of 293 wh d of 52 on a placement test. What is the 90 confidence inneral for the mean soom students taking the test? A) 28.8 << 302 B) 283 << 30.7 Q 27.8 << 31.2 D) 27.9 << 31.1