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 (VR). These students then took his original final exam, and their sample average was M=76. Assume for this first question that Snape’s final exam has a population standard deviation of σ=12. Can he demonstrate that the VR instruction method was significantly different from his traditional teaching method? (Assume a two-tailed test with α=.05) No, he cannot conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.00 and is not 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 -1.33 and is not significant Yes, he can conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.00 and is significant
5. 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 (VR). These students then took his original final exam, and their sample average was M=76.
Assume for this first question that Snape’s final exam has a population standard deviation of σ=12.
Can he demonstrate that the VR instruction method was significantly different from his traditional teaching method? (Assume a two-tailed test with α=.05)
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No, he cannot conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.00 and is not significant |
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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 |
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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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Yes, he can conclude that his VR method is significantly different from his traditional method. This is because the z-test equals -1.00 and is significant |
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