Question

Your research team is interested in studying how factors how gender and alcohol consumption are related to grip strength, and how these factors interact. SO you have 3 questions:

Does gender influence grip strength?

Does alcohol consumption influence grip strength?

Do gender and alcohol consumption influence grip strength

Alcohol is dichotomized as those who consume alcohol at least weekly, and those who do not

So now you have:

“Gender” main effect

H0: No difference in strength of grip between man and women

  

H1: You fill in_____________________________________________

Main effect for “alcohol”

H0: _______________________________________________________

H1: _______________________________________________________

“Interaction” for gender and alcohol

H0: Influence of alcohol consumption on grip strength is the same for men and women

H1: ______________________________________________________________

N= 50/Here is a table of 12 of them. Look at the table

Gender/Alcohol/GripStrength

                                                            F/Y/19      M/Y/31

                                                             F/Y/20     M/Y/30

                                                             F/Y/21     M/Y/35

                                                              FN/30     M/N/32

                                                              F/N/25   M/N/35

                                                               F/N/28   M/N/32

The Experimenters made an ANOVA testing differences in grip strength for gender and alcohol consumption. They Found:

                                                                                                                

  

Source              Sum of Squares         df      Mean Square         F        Sig.

Corrected                   733.085              3              244.362           20.03   .001

Gender                        504.806             1              504.806            41.39 .001

     Alcohol                       148.325             1              148.35              12.16 .001

     Gender*Alch                80.769              1              80.769              6.622 .001

It looks like both main effects and interaction are significant

What does that mean?

What Does that Mean for:

Gender: F (1,46) =41.385 p less than .001_____________________________

Alcohol: F (1.46) = 12.160 p = .001___________________________________

Gender x Alcohol: F (1.46) = 6.622 p =.0131 __________________________

Answer 1

In case of Gender: F (1,46)= 41.385 p is less than .001. The value of p is less than.05 significance level.We reject the null hypothesis.There exists a difference in the strength of grip between men and women.

In case of Alcohol: F (1.46) = 12.160 p = .001 The value of p is less than .05 significance level. We reject the null hypothesis.There exists no difference between the grip strength of people who consume alcohol at least weekly or not.

In case of interaction level. We reject the null hypothesis that influence of alcohol consumption on grip strength is the same for men and women