The data table represents the measure of a variable before and after a treatment. Does the sample evidence suggest that the treatment is effective in decreasing the value of the responsevariable? Use the alpha equals 0.10

=0.10 level of significance. Complete parts (a) through (d).

Individual

1

2

3

4

5

Before comma x Subscript i

Before,xi

42

42

34

34

54

54

46

46

36

36

After comma y Subscript i

After,yi

39

39

31

31

47

47

46

46

33

33

(a) What type of test should beused? Choose the correct answer below.

A.

A hypothesis test regarding the difference between two population proportions from independent samples.

B.

A hypothesis test regarding the difference of two means using amatched-pairs design.

C.

A hypothesis test regarding the difference of two means usingWelch's approximate t.

D.

A hypothesis test regarding two population standard deviations.

(b) Determine the null and alternative hypotheses. Let mu Subscript d Baseline equals mu Subscript x Baseline minus mu Subscript y

d=xy. Choose the correct answer below.

A.

Upper H 0 : mu Subscript d Baseline equals 0

H0:d=0; Upper H 1 : mu Subscript d Baseline less than 0

H1:d<0

B.

Upper H 0 : mu Subscript d Baseline equals 0

H0:d=0; Upper H 1 : mu Subscript d Baseline greater than 0

H1:d>0

C.

Upper H 0 : mu Subscript d Baseline equals 0

H0:d=0; Upper H 1 : mu Subscript d Baseline not equals 0

H1:d0

D.

Upper H 0 : mu Subscript d Baseline not equals 0

H0:d0; Upper H 1 : mu Subscript d Baseline greater than 0

H1:d>0

(c) Use technology to calculate theP-value.

nothing

(Round to three decimal places asneeded.)

(d) Draw a conclusion based on the hypothesis test. Choose the correct an