7. A researcher is interested in the effect of meditation on memory. To test this hypothesis, she invited 25 adult volun

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7 A Researcher Is Interested In The Effect Of Meditation On Memory To Test This Hypothesis She Invited 25 Adult Volun 1 (54.13 KiB) Viewed 12 times

7. A researcher is interested in the effect of meditation on memory. To test this hypothesis, she invited 25 adult volunteers to participate in a week-long meditation retreat and then tested them on how many digits they can memorize. The researcher finds that the mean digit span for the participants in this study is x = 7.53 with a sample standard deviation s =.97. Previous work on memory has shown that the average memory for adult digit span is 7 (μ= 7) with o =. 5. Can the researcher conclude that meditation improves memory? Complete the steps below to get to your final answer. a. State your H₁ and H, in both words and symbols: (4pts) Null hypothesis (2pts) Alternative hypothesis (2pts) b. Calculate your z-test statistic. Note, this may require you to first find your SE. Show your work and round your answer to 2 decimals. (3 pts) c. Should the researcher reject or retain the null? Justify your answer by finding the associated p-value in the z-table (on CANVAS-Resource Module) and comparing the p value with a. (3pts) Reject or retain the H₁? (1pt)