Question

In: Statistics and Probability

You want to study an agricultural treatment to remove a pest on citrus plants. Suppose you...

You want to study an agricultural treatment to remove a pest on citrus plants. Suppose you have a citrus farm. The presence of the pest is measured by the productivity of the plant. Suppose that before and after applying the treatment the productivity of 9 plants was measured. Measurements are in numbers of bags and are in the following table:

Find the confidence interval to see if there is an improvement in productivity with the treatment of the pest. Determine with 95% confidence the interval for the average difference in citrus productivity.

Before

35

28

33

42

38

43

36

26

35

After

38

33

37

41

40

44

39

28

39

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