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If the below data represent the number of days? absent, x, and the final exam? score, y, for a sample of college students in a general education course at a large state university, how would I find the least-squares regression line treating number of absences as the explanatory variable and the final exam score as the response variable and then interpret the slope and the? y-intercept, if appropriate and then predict the final exam score for a student who misses five class periods, ^y = __, and the residual?
# of absences x 0 1 2 3 4 5 6 7 8 9
Final exam score y 88.6 85.8 82.7 80.8 77.8 74.3 63.5 70.8 64.8 65.8
a biologist is investigating the effect of potential plant hormones by treating 20 stem segments. at the end of the
Construct a 90% confidence interval for the overall proportion p of adults who say that movies are getting better.
If an estimate of the difference in mean time to completion of the task is recognized to be within ±2 minutes with 95% reliability, how large of a sample is needed (for each group)? What is the sampling assumption being made?
Fifty million of 94 million households watched the last episode of a popular television show. What percentage of households were not watching the show? Approximately ? % of households were not watching the last episode of the show.
An independent researcher has decided to study variations in TV viewing habits among three American cities. She has managed to randomly sample households in Chicago, Atlanta, and Minneapolis and gather data on the daily "on" times for households o..
For each example, what is an appropriate analysis or procedure to use to determine if there is an association between the two variables.?
1.a researcher is interested in comparing sat scores for students enrolled in public schools private schools and those
Show that Simpson's paradox holds: a higher percentage of white defendants are sentenced to death overall, but for both black and white victims.
CNNBC recently reported that the mean annual cost of auto insurance is 1009 dollars.
Assuming that the decision makers in this situation are not willing to make the assumptions required to perform the paired-sample t-test.
According to Money, the average yield of a 6-month bank certificate of deposit (CD) is 3.56%, and the average yield for money market funds (MMFs) is 4.84%.- Use statistical inference to determine whether, on average, one mode of investment is bette..
Explain the implications of this statement in the context of ordinary least squares regression? Be sure your answer includes a discussion of hypothesis testing.
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