Question 1
A study was designed to investigate the effects of two variables — (1) a student's level of mathematical anxiety and (2) teaching method — on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 260 with a standard deviation of 30 on a standardized test. Assuming a mound-shaped and symmetric distribution, what percentage of scores exceeded 200?
◦ approximately 95%
◦ approximately 97.5%
◦ approximately 84%
◦ approximately 100%
Question 2
A study was designed to investigate the effects of two variables — (1) a student's level of mathematical anxiety and (2) teaching method — on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 350 with a standard deviation of 40 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 99.7% of the students score?
◦ between 230 and 470
◦ above 470
◦ below 470
◦ below 230 and above 470
The experiment performed by Jacob, Monod, and Pardee to study a lacI constitutive mutant
Effects of ¬hormones.
Nursing Student life
Everytime Im trying to study Check Me! Check Me!
The Effects of Asthma on the Bronchioles
The results from West and Crook's study of memory for telephone numbers