Pharmaceutical company claimed that experiments showed that its drug could effectively reduce the growth of cancer cells by 35 percent. however, when five independent laboratories conducted the same experiment, they measured a reduction rate of only 5–8 percent. how did these laboratories show that the pharmaceutical company’s claims were invalid?
a. the labs used the pharmaceutical company’s inadequate data.
b. the labs produced false data.
c. the labs recorded data incorrectly.
d. the labs were unable to reproduce the pharmaceutical company’s data.

Answer : Option D) the labs were unable to reproduce the pharmaceutical company’s data.

Explanation : When 5 independent laboratories conducted the same experiment the expected reduction rate was not observed as per the pharmaceutical company, this shows that the pharmaceutical company claim was false as their drug was not able to reduce the growth of cancer cells as per their claimed percentage reduction rate as 35%.

If the experiments are carried out anywhere in another laboratories, their claimed reduction rate for that specific drug should have reproducible results.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.