Question

A company is unveiling a new mobil app and they want to conduct a tTest to determine if there is any statistical difference in which gender is more likely to use the app? I am asking you to administer a hypothetical questionnaire to 40 students (20 men and 20 women) that measures potential usage on a scale of 1–7 on the various features they will use (1 = never use and 7 = always use). You will need to use excel to enter your data. Please remember you should vary the 40 responses randomly in your hypothetical data set and the responses should be between 1-7. After you enter the hypothetical responses you observe that the men's average is different than the women's average. Conduct the tTest to determine if the difference is statistically different But does this or just a difference in our sample, which might not be representative of the true population (e.g., unlucky random sample, or convenience sampling, etc.)?” (Creech, “T-Test”). Explain your answer using the steps to conduct a hypothesis test.

Answer 1

Independent samples t-test assuming equal population variances:

Let the significance level, =0.05

n1 =number of males (men) =20

n2 =number of females (women) =20

Degrees of freedom, df =n1 + n2 - 2 =20+20-2 =38