Professor Snape is your instructor for Chemistry 101. He has given the same final exam for his class for a long time; he happens to know that exam scores on this test are normally distributed and have a population mean of µ=80. Because of prior laboratory catastrophes (don’t worry, all students were returned to their original species), he tried a new method of instruction this year. He got a random sample of n=16 students and taught them using virtual reality. These students then took his original final exam, and their sample average was M=76. --------unique information for the second question below: -------- Assume for this second question that Snape’s final exam has a population standard deviation of σ=6. Can he demonstrate that the virtual reality instruction method was significantly different from his traditional teaching method? (Assume a two-tailed test with α=.05) Yes, he can conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -2.67 and is significant Yes, he can conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.33 and is significant No, he cannot conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -2.67 and is not significant No, he cannot conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.33 and is not significant
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.
10.
Professor Snape is your instructor for Chemistry 101. He has given the same final exam for his class for a long time; he happens to know that exam scores on this test are
Because of prior laboratory catastrophes (don’t worry, all students were returned to their original species), he tried a new method of instruction this year. He got a random sample of n=16 students and taught them using virtual reality. These students then took his original final exam, and their sample average was M=76.
--------unique information for the second question below: --------
Assume for this second question that Snape’s final exam has a population standard deviation of σ=6.
Can he demonstrate that the virtual reality instruction method was significantly different from his traditional teaching method? (Assume a two-tailed test with α=.05)
|
Yes, he can conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -2.67 and is significant |
||
|
Yes, he can conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.33 and is significant |
||
|
No, he cannot conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -2.67 and is not significant |
||
|
No, he cannot conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.33 and is not significant |
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