8. A local 7-Eleven sells a "Memory Pill" that is supposed to help people...um...remember. You find some Oxnard College students and randomly divide them into two groups of 15 students each. One group takes the actual "Memory Pill" and the other group takes the placebo. You then show them a list of 20 items and want them to remember as many as possible. The experimental group (those taking the pill) remembered an average of 12.3 items from the list, with a sample standard deviation of 5.4. The control group (with the placebo) remembered an average of 10.9 items, with a sample standard deviation of 4.2. Is this enough evidence to show that the "Memory Pill" improves...well...memory?

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8. A local 7-Eleven sells a “Memory Pill" that is supposed to help people...um...remember.
You find some Oxnard College students and randomly divide them into two groups of 15
students each. One group takes the actual "Memory Pill" and the other group takes the
placebo. You then show them a list of 20 items and want them to remember as many as
possible.
The experimental group (those taking the pill) remembered an average of 12.3 items from
the list, with a sample standard deviation of 5.4. The control group (with the placebo)
remembered an average of 10.9 items, with a sample standard deviation of 4.2.
Is this enough evidence to show that the "Memory Pill" improves...well...memory?
Transcribed Image Text:8. A local 7-Eleven sells a “Memory Pill" that is supposed to help people...um...remember. You find some Oxnard College students and randomly divide them into two groups of 15 students each. One group takes the actual "Memory Pill" and the other group takes the placebo. You then show them a list of 20 items and want them to remember as many as possible. The experimental group (those taking the pill) remembered an average of 12.3 items from the list, with a sample standard deviation of 5.4. The control group (with the placebo) remembered an average of 10.9 items, with a sample standard deviation of 4.2. Is this enough evidence to show that the "Memory Pill" improves...well...memory?
Type of Test:
Hypotheses:
Test Statistic:
P-value:
Decision:
Transcribed Image Text:Type of Test: Hypotheses: Test Statistic: P-value: Decision:
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