An experiment on memory was performed, in which 16 subjects were randomly assign

Question

An experiment on memory was performed, in which 16 subjects were randomly assigned to one of two groups, called "Sentences" or "Intentional", Each subject was given a list of 50 words. Subjects in the "Sentences" group were told to form multiple sentences, each using at least two words from the list, and to keep forming sentences until all the words were used at least once. Subjects in the "Intentional" group were told to spend five minutes memorizing as many of the 50 words as possible. Subjects from both groups were then asked to write down as many words from their lists as they could recall. The data are in the table below Number of words recalled "Sentences" group "Intentional" group 36 25 30 3330 3332 29 31 36 33 34 34 36 35 36 Enter this data into JMP in "long form" (e.g. each column should be a variable and each row should be an observation). We are interested in determining if there is a significant difference in the average number of words recalled for subjects in the "sentences" group vs. subjects in the "intentional" group, using -0.05. Use JMP to answer the questions below, and round all answers to three decimal places a. The appropriate null/alternative hypothesis pair for this study is: (you have two attempts at this question) Ho: Asentences-rintentional .. 0 ; HA: sente Ho-Asentences-ntentional = 0 ; HA: sentences-ntentional nces-uintentional 0 0 H0: Asentences-.ntentional-0 ; HA: sen tences-uintentional > 0 b. Enter the values for the following statistics: Xsentences sentences = Xintentional = Sintentional (sentences-xintentional) standard error of (xsentences Xintentional) test statistic: t p-value = C. Report the 95% confidence interval JMP gives for sentences-Antentional Lower bound = Upper bound =

Explanation / Answer

An experiment on memory was performed, in which 16 subjects were randomly assigned to one of two groups, called "Sentences" or "Intentional", Each subject was given a list of 50 words. Subjects in the "Sentences" group were told to form multiple sentences, each using at least two words from the list, and to keep forming sentences until all the words were used at least once. Subjects in the "Intentional" group were told to spend five minutes memorizing as many of the 50 words as possible. Subjects from both groups were then asked to write down as many words from their lists as they could recall. The data are in the table below Number of words recalled "Sentences" group "Intentional" group 36 25 30 3330 3332 29 31 36 33 34 34 36 35 36 Enter this data into JMP in "long form" (e.g. each column should be a variable and each row should be an observation). We are interested in determining if there is a significant difference in the average number of words recalled for subjects in the "sentences" group vs. subjects in the "intentional" group, using -0.05. Use JMP to answer the questions below, and round all answers to three decimal places a. The appropriate null/alternative hypothesis pair for this study is: (you have two attempts at this question) Ho: Asentences-rintentional .. 0 ; HA: sente Ho-Asentences-ntentional = 0 ; HA: sentences-ntentional nces-uintentional 0 0 H0: Asentences-.ntentional-0 ; HA: sen tences-uintentional > 0 b. Enter the values for the following statistics: Xsentences sentences = Xintentional = Sintentional (sentences-xintentional) standard error of (xsentences Xintentional) test statistic: t p-value = C. Report the 95% confidence interval JMP gives for sentences-Antentional Lower bound = Upper bound =

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