Question

Standara deviatIon anu tne esumateu stdnuaru erTur 1or the samppie Aa Aa mean difference A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the adctivity of n 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February. The data are collected, and the results show an average difference score of Mo 3.8 and a sum of squares of SS 522.15 what is the value for degrees of freedom for this repeated-measures t test? Q 47 50 15 O 16 What is the sample standard deviation (s) for the D scores? O 522.15 O 1.48 5.9 34.81 what is the estimated standard error of the mean difference (Sep) for this study? O 0.37 O 2.18 O 1.48 O 1.22 OO0O OOOO

Answer 1

Answer Date: 22/10/2019 The value of degrees of freedom for repeated-measures t test is, d.f.=n-1 = 16-1 = 15 The value of degrees of freedom for repeated-measures t test is 15. The answer option is 3). The sample standard deviation of D score is, Vn-1 522.15 V 16-1 = 5.9

The sample standard deviation of D score is 5.9. The answer option is 3). The estimated standard error of the mean difference for this study is, 16 = 1.48 The estimated standard error of the mean difference for this study is 1.48. The answer option is 3).