3. A study on the enhancing effects of coffee on long-term memory found that 35 participants given 200 mg of caffeine performed better on a memory test 24 hours later compared to the placebo group that received no caffeine. Use the given probability values to determine whether the sample results could easily occur by chance, and then form a conclusion. a. There was a probability of 0.049 that difference between the coffee group and the placebo group was due to chance. What do you conclude?
A study on the enhancing effect of coffee on long-term memory found that 35 participants given 200 mg of caffeine performed better on a memory test 24 hours later compared to the placebo group their receive no caffeine use the given
a.there was a probability of 0.049 that difference between the The coffee group in the placebo group was due to chance. What do you conclude ?
b.a group Given a higher dose of 300 g performed better than the 200 mg group with the probability of 0.75 that this difference is due to chance. what do you conclude?
Given ,
there was a probability of 0.049 that difference between the The coffee group in the placebo group was due to chance. What do you conclude ?
If the probability of the results happening by chance is low, then the probability of the result not happening by chance ( the complement) is high.
calculated by
1 - 0.049 = 0.951
therefore, the result probably did not happen by chance.
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