Human body odor may contribute to selection of partners If s

Human body odor may contribute to selection of partners. If so, sexual orientation may influence preference for and perhaps production of human body odors. In a test of these hypotheses, heterosexual and homosexual males and females made two-alternative forced-choice preference judgments for body adors obtained from other heterosexual and homosexual males and females. Subjects chose between odors from(a) heterosexual males and females.

Solution

Null hypothesis is a statistical analysis part of any research work which is essential for its significance.

For example

A group of children taking simple milk and another is taking milk with supplements.

So after experiment two things can come that “there is no significant difference in the growth of children by drinking milk or supplemented milk”.    this is called null hypothesis (H_o)

But when null hypothesis rejected this become alternative hypothesis (H₁) that is “there is significant difference in the growth of children by drinking milk and supplemented milk”

So, if there is no significant difference between two variables it is called null hypothesis but if there is significant differences observed it is called null hypothesis rejected or alternative hypothesis accepted.