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In: Statistics and Probability

Use the following information to answer questions 9-15. The length of time spent in the examination...

Use the following information to answer questions 9-15.

The length of time spent in the examination room is recorded for each patient seen by each physician at an orthopedic clinic.

Does the data provide a significance difference in mean times?

Physician 1

Physician 2

Physician 3

Physician 4

34

33

17

28

25

35

30

33

27

31

30

31

31

31

26

27

26

42

32

32

34

33

28

33

21

26

40

29

   X.1=198

X. 2=205

X.3=218

X.4=224

  1. With α=.05 the null hypothesis should be:

    Rejected

    Not Rejected

    Impossible to determine

       none of the above answers are correct

10 points   

QUESTION 15

  1. Find a 95% confidence interval for μ23.

    (2.76,11.08)

    (1.91,11.93)

       (.87,12.97)

    (.18,13.66)

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