A cognitive psychologist believes that a particular drug improves short term memory. And experiment is conducted in which he randomly selected participants are then tested for retention 15 minutes after the memorization. The number of words correctly recalled by each participant is as follows eight, nine, 10, six, eight, seven, nine, seven, seven. Over the past few years, the psychologist has collected a lot of data using this task with similar participants and the average word correctly recall was six words and the standard deviation is to. Answer the below questions using a=0.05 tail.
A cognitive psychologist believes that a particular drug improves short term memory. And experiment is conducted in which he randomly selected participants are then tested for retention 15 minutes after the memorization. The number of words correctly recalled by each participant is as follows eight, nine, 10, six, eight, seven, nine, seven, seven. Over the past few years, the psychologist has collected a lot of data using this task with similar participants and the average word correctly recall was six words and the standard deviation is to. Answer the below questions using a=0.05 tail.
What is the alternative hypothesis?
What is the null hypothesis?
What inferential test is being conducted?
What is the obtained statistic?
What is the critical value?
What is your decision?
what is your conclusion?
what is your effect size?
what error might you be making?
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