an educational psychologist studies the effect of frequent testing on retention of class material. in one section of an introductory course, students are given quizzes each week. a second section of the same course receives only two tests during the semester. at the end of the semester, both sections take the same final examination. the summarized scores are as follows: (a) frequent quizzes--n=20, m=73, sample variance= 84 and (b) two tests--n=20, m=68, sample variance=96. use a two-tailed test with preset alpha=.05. provide the t statistic, df, critical value, and decision regarding the null hypothesis.

m a t h w a y. c o m

step-by-step explanation:

the data of the detroit pistons in numerical order from least to greatest is 0.30, 0.37, 0.55, 0.62, 0.69, 0.72, 0.73, 0.75, 0.77, 0.78, 0.80, 0.81, 0.81, 0.83, 0.84, 0.89

the data of the miami heat in numerical order from least to greatest is 0.50, 0.50, 0.56, 0.57, 0.67, 0.72, 0.72, 0.72, 0.75, 0.75, 0.76, 0.81, 0.82, 0.90, 1.00, 1.00

the detroit pistons median : 1.52

the miami heat median: 1.47

the iqr of this data is 0.05

show da graph

step-by-step explanation:

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically