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"Education is the most powerful weapon which you can use to change the world”
– Nelson Mandela

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Homework 9

Homework 9

Q 1. I COLLECT DATA FROM A SAMPLE OF 25 INDIVIDUALS. THIS SAMPLE HAS 3 DISTINCT MODES. WHAT IS THE SHAPE OF THE SAMPLING DISTRIBUTION OF SAMPLE MEANS FOR THIS SAMPLE? 2. THIS IS THE MEAN OF A SAMPLE OF CONSTRUCTION WORKERS WHO WEAR RED HATS. (CIRCLE CORRECT ANSWER) • Population mean • Sample mean • Mean of sampling distribution of means 3. WHEN WE WERE CHECKING WHETHER SCORE OF AN INDIVIDUAL WAS EXTREME FOR A DISTRIBUTION, WE USED A DISTRIBUTION OF INDIVIDUAL SCORES TO MAKE THAT DETERMINATION. WHY CAN’T WE USE THE SAME DISTRIBUTION TO MAKE A SIMILAR DETERMINATION ABOUT A SAMPLE MEAN? 4. WE’VE DRAWN A SAMPLE OF 100 INDIVIDUALS AND A SAMPLE OF 1000 INDIVIDUALS FROM THE SAME POPULATION. WHICH CHARACTERISTICS OF THE SAMPLING DISTRIBUTION OF SAMPLE MEANS DO YOU EXPECT TO BE SIMILAR, AND WHICH DO YOU EXPECT TO BE DIFFERENT?

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1. bimodal 2. • Sample mean