A self-proclaimed "thug-expert" claims that 38% of thugs prefer cocaine, 32% prefer heroin, 24% prefer methamphetamine, 5% prefer PCP, and 1% prefer some other drug. 800 thugs are surveyed, and it's found that 297 prefer cocaine, 211 prefer heroin, 258 prefer methamphetamine, 12 prefer PCP, and 22 prefer some other drug. To a 1% level of significance, can it be asserted that the expert is wrong?
A self-proclaimed "thug-expert" claims that 38% of thugs prefer cocaine, 32% prefer heroin, 24% prefer methamphetamine, 5% prefer PCP, and 1% prefer some other drug. 800 thugs are surveyed, and it's found that 297 prefer cocaine, 211 prefer heroin, 258 prefer methamphetamine, 12 prefer PCP, and 22 prefer some other drug. To a 1% level of significance, can it be asserted that the expert is wrong?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Answer question 6 and show work as shown in the example.
Transcribed Image Text:A self-proclaimed "thug-expert" claims that 38% of thugs prefer cocaine, 32% prefer heroin, 24%
prefer methamphetamine, 5% prefer PCP, and 1% prefer some other drug.
800 thugs are surveyed, and it's found that 297 prefer cocaine, 211 prefer heroin, 258 prefer
methamphetamine, 12 prefer PCP, and 22 prefer some other drug.
To a 1% level of significance, can it be asserted that the expert is wrong?
Transcribed Image Text:Professor Snerd's Theory of Plutonian Chiropteran Genetics asserts that 43% of all Plutonian Bats should be
yellow, 18% should be green, 10% should be orange, 9% should be blue, 8% should be red, 6% should be
pink, 3% should be purple, 2% should be psychedelic, and 1% should be white.
4000 Plutonian Bats are examined, and it's found that 1755 are yellow, 747 are green, 388 are orange, 330 arc
blue, 318 are red, 241 are pink, 111 are purple, 84 are psychedelic, and 26 are white.
To a 1% level of significance, can it be asserted that Snerd's theory is wrong?
4000
1%
YGOBRPi Pu Ps W
1755 749 388 330 318 241 111
84
26
1720 720 400 360 320 240 (20 80 40
(432)(5) 1023 (923) (1) (2) (3) (22)7 (18)
(x3)(0)
2
x² = Σ(8-E)²
E
720
(01) (1000)
10.376
(35) ....u.9.0.0
1720
240
(02X(4000)
360
320
Ho Expert Right
HA: Expert Wrong
72's
X²8
20.090
40
12
? NO!
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