Which of the following statements about pilling is not true? a. hydrophilic fibers pill more than hydrophobic fibers b. pilling is hardly ever seen in a 100% cotton shirt c. strong fibers have a propensity to pill d. pills can be seen on garments made from 50% cotton / 50% polyester

The best answer to the question: Which of the following statements about pilling is NOT true? Would be, C: Strong fibers have a propensity to pill.

Explanation:

Pilling is the formation of small balls of fibers on certain materials that are used to make clothing items. Normally, this process happens to all materials, both pure like wool, or synthetic, like polyester, due to time, usage, wear and tear, as well as exposure to detergents and water. However, while in synthetic materials this process happens really fast, sometimes as soon as the first wash, in pure fibers like cotton, or wool, the process is much slower, sometimes not even happening, and it will not be evidence of bad materials, but rather, a natural situation of all textiles. Because it is not true that strong fibers, like cotton or wool, tend to pill, this is why answer C would be the correct choice for what is NOT a true statement.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.