Before and after seeing a film about sexual health, 8 participants completed a questionnaire designed to assess their attitudes toward increased sex education in schools. The data below shows their attitude scores (a higher score indicating a more favourable attitude). Before After 13 16 16 18 10 12 14 18 15 18 12 15 11 12 18 20 Using this information, fill in the blanks and then complete the interpretation below: Q1. The appropriate test to conduct would be: . Q2. The conceptual null hypothesis would state: . Q3. The statistical alternative hypothesis would state: . Q4. The obtained value is: . Q5. The critical value is: . Q6. The statistical decision is to: . Possible answers for Q1: A) an independent groups t-test B) a single sample z-test C) a repeated measures t-test D) a single sample t-test Possible answers for Q2: A) µD = 0 B) µD ≠ 0 C) There is no difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film. D) There is a difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film. Possible answers for Q3: A) µD = 0 B) µD ≠ 0 C) There is no difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film. D) There is a difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film.
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Before and after seeing a film about sexual health, 8 participants completed a questionnaire designed to assess their attitudes toward increased sex education in schools. The data below shows their attitude scores (a higher score indicating a more favourable attitude).
Before After 13 16 16 18 10 12 14 18 15 18 12 15 11 12 18 20 Using this information, fill in the blanks and then complete the interpretation below:
Q1. The appropriate test to conduct would be: .
Q2. The conceptual null hypothesis would state: .
Q3. The statistical alternative hypothesis would state: .
Q4. The obtained value is: .
Q5. The critical value is: .
Q6. The statistical decision is to: .
Possible answers for Q1:
A) an independent groups t-test
B) a single sample z-test
C) a repeated measures t-test
D) a single sample t-testPossible answers for Q2:
A) µD = 0
B) µD ≠ 0
C) There is no difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film.
D) There is a difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film.Possible answers for Q3:
A) µD = 0
B) µD ≠ 0
C) There is no difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film.
D) There is a difference between participants' attitudes toward increased sex education in schools before the sexual health film compared to after the sexual health film.Possible answers for Q4:
A) 0.33
B) -2.70
C) -7.65
D) -8.25Possible answers for Q5:
A) ± 1.96
B) ± 2.447
C) ± 2.365
D) ± 2.306Possible answers for Q6:
A) Retain the null hypothesis
B) Reject the null hypothesis
C) Retain the alternative hypothesis
D) Reject the alternative hypothesis
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