In a study conducted by some Statistics students, 71 people were randomly assigned to listen to rap music, music by Mozart, or no music while attempting to memorize objects pictured on a page. They were then asked to list all the objects they could remember. The summary statistics for each group are shown in the table. Complete parts a and b. Rap Count 31 11.61 Mozart 23 No Music 17 Mean 8.04 13.92 SD 4.48 3,32 4.84 a) Does it appear that it is better to study while listening to Mozart than to rap music? Test an appropriate hypothesis and state your conclusion. Let group M correspond to Mozart listeners and group R correspond to rap listeners. Write the null and altemative hypotheses. Choose the correct answer below. OA H Hu PR = 0 OB. H HM HR =0 HA HM HR <0 D. Hoi Hu- PR=0 OC. H u-P<0 HA HM-H0 Test the hypothesis. t= -3.36 (Round to two decimal places as needed.) (Round to four decimal places as needed.)

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.