Lenard claimed that he can solve the Rubik's cube in less than 170 seconds. In 35 trials, his mean time turned out to be 180 seconds with a standard deviation of 25 seconds. Assuming that the length...


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Lenard claimed that he can solve the Rubik's cube in less than 170 seconds. In 35 trials, his mean time turned out to be 180 seconds with a standard<br>deviation of 25 seconds. Assuming that the length of time to solve the cube follows a normal distribution, is Lenard's claim is true? Level of significance is<br>1%.<br>Test statistic=<br>P- value =<br>Is Lenard's claim is true? Yes or No?<br>

Extracted text: Lenard claimed that he can solve the Rubik's cube in less than 170 seconds. In 35 trials, his mean time turned out to be 180 seconds with a standard deviation of 25 seconds. Assuming that the length of time to solve the cube follows a normal distribution, is Lenard's claim is true? Level of significance is 1%. Test statistic= P- value = Is Lenard's claim is true? Yes or No?

Jun 10, 2022
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