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Question: The following table consists of one student athlete's time (in minutes) to swim 2000 yards and the student's heart rate (beats per minute) after swimming on a random sample of 10 days
a. Enter the data into your calculator and make a scatter plot.
b. Use your calculator's regression function to find the equation of the least-squares regression line. Add this to your scatter plot from part a.
c. Explain in words what the slope and y-intercept of the regression line tell us.
d. How well does the regression line fit the data? Explain your response.
e. Which point has the largest residual? Explain what the residual means in context. Is this point an outlier? An influential point? Explain
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A study of 200 apples trees showed that the average number of apples per tree was 1000. The standard deviation of the population is 200. Which of the following is the 98% confidence interval for the mean number for all apples.
historical data indicates that the standard deviation of a process is 6.3. a recent sample of size 28 produced a sample
an investigator conducts a study to investigate whether there is a difference in mean pef in children with chronic
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Suppose you are interested in the relationship between adolescent employment and the number of delinquent acts one commits. To examine this relationship, you take a sample of 30 youths, 10 of whom did not work in the previous year, 10 youths who w..
What is the effect on a confidence interval if one decreases both sample size and the level of confidence?
if 3 different factor levels show a lot of variation between levels this impliesa a large amount of error within each
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the probabilities of two events x and y are 0.4 and 0.6 respectively. the conditional probabilities of three other
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