Mathematics, 16.12.2019 23:31 f13vsdbd
After many years of teaching, a statistics professor computed the variance of the marks on her final exam and found it to be σ2 = 250. she recently made changes to the way in which the final exam is marked and wondered whether this would result in a reduction in the variance. a random sample of this year’s final exam marks are listed here. can the professor infer at the 10% significance level that the variance has decreased?
Answers: 2
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The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second
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After many years of teaching, a statistics professor computed the variance of the marks on her final...
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