Compute r2 to measure the size of the effect compute a 90

Reference no: EM13616731

A psychologist studied the effect of frequent testing on perception of course material. In one of the professor's sections, students are given quizzes each week. The secon section receives only two tests during the semester. At the end of the semester, both sections receive the same questionnaire. Summarized below is a random sample of the perception scores from 9 students in each section.

Frequent quizzes: 4,8,3,10,5,6,6,2,10

two exams: 5,7,9,9,10,10,12,14,14

a. Do the data indicate that the testing frequency has a significant effect on performance: Conduct a hypothesis test with a=.05

b. Compute r2 to measure the size of the effect

c. Compute a 90% confidence interval to estimate the population mean difference

Reference no: EM13616731

Questions Cloud

A swimmer moves through the water at an average speed of : a swimmer moves through the water at an average speed of 0.29 ms. the average drag force is 115 n. what average power

Depreciation and accounting cash flow a firm in the third : depreciation and accounting cash flow a firm in the third year of depreciating its only asset which originally cost

Suppose that an eddy current nondestructive evaluation : show work or explain how you got the answersuppose that an eddy current nondestructive evaluation technique for

You swing a 165-kg rock tied to a rope in a vertical : you swing a 1.65-kg rock tied to a rope in a vertical circle of radius 0.75 m. when the rock reaches the top its speed

Compute r2 to measure the size of the effect compute a 90 : a psychologist studied the effect of frequent testing on perception of course material. in one of the professors

A bread box is made to move along an x axis from x 015 m : a bread box is made to move along an x axis from x 0.15 m to x 1.20 m by a force with a magnitude given by f e-2x2

Capital co has a capital structure based on current market : capital co. has a capital structure based on current market values that consists of 27 percent debt 19 percent

The life in hours of a laser is known to be normally : the life in hours of a laser is known to be normally distributed with a standard deviation of sigma 20 hours. a sample

If a quasar is 100 times more luminous than a bright galaxy : if a quasar is 100 times more luminous than a bright galaxy absolute magnitude about -21 what is the absolute magnitude

User Account

All Pages