Question

a. is there any hope for those who like to pack on late night snacks? Does eating nuts (raw almonds, etc.) versus chips (Doritos) and candy (M&Ms) result in less weight gain, measured in ounces? We ran our experiment with the same participants eating before nuts, and after eating chips and candy.

Weight gained when eating nuts as late-night snacks in oz.	Weight gained when eating chips and candy as late-night snacks in oz.
12 15 9 16 12 15 17 10 12 14	13 15 11 15 15 18 17 12 13 17

Test using alpha = .01

N = 10

Sum of D squared = 38

What is step 1?

Group of answer choices

H0: μD = 0 // H1: μD ≠ 0

H0: μD ≤ 0 // H1: μD > 0

H0: μD ≥ 0 // H1: μD < 0

b. What are the computations necessary for this test?

Mean of the difference scores (answer choices follow)

-1.4

.452

2.044

196

Estimated variance of the difference scores (answers choices follow)

-1.4

.452

2.044

196

c. State step 2.

Alpha (answer choices follow):

.01

directional

non directional

2 tails

1.833

1 tail

-2.821

Number of tails(answer choices follow):

.01

directional

non directional

2 tails

1.833

1 tail

-2.821

Directional or non directional?(answer choices follow)

.01

directional

non directional

2 tails

1.833

1 tail

-2.821

Critical value(answer choice follow):

.01

directional

non directional

2 tails

1.833

1 tail

-2.821

d. Estimate of the standard error of the mean difference

      [ Choose ]            -1.4            .452            -3.097            2.044      

t obtained

      [ Choose ]            -1.4            .452            -3.097            2.044

e.

What decision should be made?

Group of answer choices

Retain H0

Reject H0

f.

Describe step 5.

Group of answer choices

It appears that eating nuts significantly results in lower gain weight than eating chips and candy.

It appears that eating nuts does not significantly result in lower gain weight than eating chips and candy.

g.

What is the APA confidence interval?

Group of answer choices

99% CI = (-2.869, .069)

95% CI = (2.869, -.069)

99% CI = (3, .1)

h.

Effect size, Cohen's d?

Group of answer choices

-.979

-1.4

1.430

i.

Sandler's A?

Group of answer choices

Acrit

      [ Choose ]            .368            .213            .194            Retain H0            Reject H0            .276      

Aobt

      [ Choose ]            .368            .213            .194            Retain H0            Reject H0            .276      

Decision

      [ Choose ]            .368            .213            .194            Retain H0            Reject H0            .276      

Answer 1

H0: μD ≥ 0 // H1: μD < 0

BY USING SPSS WE HAVE

DIFFERENCE SCORE= -1.4

VARIANCE FOR DIFFERENCE= (1.43)^2=2.044

ALPHA=0.01

1 TAIL TEST

DIRECTIONAL

CRITICAL= -2.821

STANDARD ERROR OF MEAN= 0.452

t obtained= -3.097

e] REJECT H0.

f] It appears that eating nuts significantly results in lower gain weight than eating chips and candy.

g] 99% CI = (-2.869, .069)

h] cohen'd= -1.4/1.4298= -0.979

answered by: anonymous