Mathematics, 24.03.2021 15:50 nikki8240
According to a statistics professor, the general students’ test score is usually a normal
distribution with a mean of 62 and a standard deviation of 6. Suppose that the professor
wants to see if there is any difference in students’ test scores when replacing the original
teaching method with the new teaching method. She decides to teach her class with the
new teaching method; then, records her students’ score and compare them with the original
distribution.
a. What percentage of the students’ scores higher than 77 in the original distribution?
b. Define the independent and dependent variable for the experiment.
c. The professor believes that new teaching method will lead to a decrease in scores. State
the null and alternative hypotheses.
Answers: 1
Mathematics, 22.06.2019 04:00
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Mathematics, 22.06.2019 07:00
Atrain is travelling from new orleans to memphis at a constant spend of 79 miles per hour. new orleans and memphis are 395.1 miles apart. how long will the train be to reach memphis round to the nearest tenth
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According to a statistics professor, the general students’ test score is usually a normal
distribut...
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